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Wastewater Pollution

Turning a Critical Problem into Opportunity

Wastewater is a major threat to nature and human health.

Without adequate treatment, wastewater can contribute to habitat loss and extinction. TNC is actively addressing this through innovative science, strategic communications and policy interventions.

A Scary Status Quo

Every day 80% of the world’s wastewater enters our environment completely untreated, jeopardizing nature and public health, with far-reaching consequences for climate resilience, aquatic biodiversity and food and water security and access. Wastewater introduces a toxic cocktail of contaminants that threaten our food and water security as well as marine species. 

What's in wastewater? Pathogens, pharmaceuticals, microplastics, heavy metals, endocrine disruptors and more.

Our existing wastewater treatment systems allow us to “flush it and forget it,” avoiding the complex reality of wastewater pollution. Ignoring this critical issue leads to dangerous consequences, some of which we are already seeing like closed beaches, collapsed fisheries and algal blooms that suffocate aquatic life. 

Wastewater Pollution is Everywhere

TNC’s Solution

TNC scientists and conservation practitioners are addressing the dangerous impacts of wastewater pollution with a whole-system approach.

In addition to TNC’s on-the-ground projects across the globe, our dedicated wastewater pollution program is working across the Pacific to coordinate partners, develop foundational science and find solutions that work.

• Comms & Policy
• Science & Research
• Green Solutions

Climate Impacts

Eyes on wastewater.

Wastewater can often be a hidden threat. Click through this slideshow to see what's just below the surface.

Ocean Sewage: 2 divers inspect the effects of Delray Beach sewage outfall on the coral reef in Florida. © Steve Spring/Palm Beach County Reef Rescue

Coastal Pollution: Riverine discharges to coastal areas. Studies have linked wastewater pollution to seagrass die-offs, harmful algal blooms and weakened reefs. © Malik Naumann/Flickr

Sewage Contaminated Water: Ignoring wastewater pollution can have dangerous consequences, some of which we are already seeing like closed beaches, collapsed fisheries and algal blooms. © Brian Auer

Wastewater Pollution: Wastewater introduces a toxic cocktail of contaminants that threaten our food and water security as well as marine species. © Tom Fisk

Marin County Sewage: Richardson Bay in Marin County, CA is one of the sites in the Bat Area that has experienced sewage spills. © KQED Quest/Flickr

Strategic Communications & Policy

For too many, wastewater pollution flies under the radar or is simply categorized as someone else’s problem. Cultural taboo, combined with misconceptions about the capacity of oceans and other water systems to absorb wastewater, limits our ability to find and implement solutions. So much of the answer hinges on raising awareness.

It's time the world understood the critical threat wastewater pollution poses to humans and the natural systems we depend on.

That’s why TNC is building awareness and education through partnerships to reach broader audiences and drive campaigns that reduce stigma around wastewater and inspire action. We’re working across sectors to produce and share research, tools, and best practices while highlighting the intersections between wastewater pollution, public health and the environment. 

COLLABORATION IN ACTION

• TNC’s collaboration with the Reef Resilience Network provides wastewater pollution training, tools, and learning resources for coral reef practitioners. 
• Our work alongside partners at the Ocean Sewage Alliance  to build a first-of-its-kind knowledge hub and resource library on marine wastewater pollution. 

POLICY REFORM

If the world is to meet the UN's Sustainable Development Goals , we'll need significant policy reform. Many of the world’s wastewater policies and regulations are inadequate and based on outdated science that neither accounts for modern-day stressors nor recognizes the economic opportunity of wastewater resource recovery. TNC is exploring avenues for policy interventions to reduce and mitigate wastewater pollution for human health and environmental protection.

Coastal Long Island, NY

Nitrogen pollution has had a devastating effect on Long Island’s water quality for decades, causing harmful algal blooms and threatening bivalves, like oysters and mussels, as well as seagrass and salt marsh habitats. TNC’s Long Island team, in collaboration with a myriad of government and private sector partners, knew their restoration work wouldn't be successful without dealing directly with the pollution's source: the island’s half-million septic systems and cesspools. Find out how they worked with policymakers and partners at the federal and local level to secure funding and policy reforms necessary to do just that — from homeowner assistance for upgrading septic systems to building clean water infrastructure across the state that mitigates the effects of wastewater pollution. As of 2024, this coalition continues to work on a major ballot valued at $6B over the next 35 years, to create a county wide water quality restoration act to substantially increase the local funding for clean septic change outs and strategic sewer expansion. This fund would be the key to unlocking federal and state infrastructure funding.

Research & Monitoring

The global scientific community is increasingly recognizing the profound impact that wastewater pollution has on aquatic ecosystems. TNC scientists and field staff are on the front lines monitoring water quality to inform wastewater pollution mitigation and management strategies. 

Studies have linked wastewater pollution to seagrass die-offs, harmful algal bloom events and weakened reefs that can destabilize entire ecosystems. Even coastal wetlands, which naturally absorb nutrients, can become oversaturated when exposed to wastewater pollution over time, making these systems more vulnerable to extreme weather events exacerbated by climate change. 

"Contaminants of emerging concern” (CECs) in wastewater, like  PFAS , pharmaceuticals, and other novel chemicals not only threaten drinking water and human health but are also contaminating coastal waters and fisheries. 

A GLOBAL GOAL FOR OUR OCEANS

TNC’s plan for ocean recovery is expansive. We have a goal of conserving 10 billion acres of ocean worldwide. In order to achieve this goal, we must ensure that wastewater does not threaten the health and quality of the marine waters we protect.

Nature-based Solutions

Nature-based solutions are interventions that harness the power of Earth’s natural features and functions. These can look like dunes and wetlands that insulate coasts from storm surge, or native forest restoration in the face of megafires.

TNC and partners are employing nature-based solutions to address wastewater. One of the most promising solutions our team is studying is constructed wetlands . These are engineered systems designed for wastewater treatment that use natural biological technologies that incorporate wetland vegetation, soils, and microorganisms to remove contaminants.

This can be a cost-effective and sustainable option, and TNC is implementing solutions like these across the globe. From the Dominican Republic to India, our team is demonstrating that constructed wetlands can be an effective, nature-based mitigation strategy to improve water quality and restore wildlife habitat. 

Constructed Wetlands in Lake Sembakkam

In Chennai, the largest city in India’s southern state of Tamil Nadu, a 100-acre wetland has been restored to protect Lake Sembakkam. Rapid urbanization, including increases in wastewater and stormwater pollution, has caused the lake to degrade over time. This is one of many critical natural wetlands that serve as a lifeline for the city’s people and wildlife—including several rare and threatened species of migratory birds. TNC’s India program helped design and restore these wetlands to support biodiversity and to improve habitat, water quality, groundwater storage and recharge, and recreation landscape. Read more about how these constructed wetlands work and why TNC is expanding the project to the broader system of Chennai’s marshland.

Climate change and wastewater pollution are two inextricably linked crises. 

It’s estimated that wastewater treatment plants account for at least 3% of all greenhouse gas emissions, in addition to supplemental emissions from direct discharge into waterways. Beyond the treatment process, wastewater pollution is also a significant threat to some of the key ecosystems we rely on to store carbon, including mangrove forests and seagrass beds. To complicate the matter, the effects of climate change—from sea level rise to the increase in extreme weather events—are overburdening wastewater treatment systems that are already stressed and outdated. 

But if we change the status quo, addressing wastewater pollution can provide multiple avenues for tackling climate change. It starts with implementing treatment options that better protect carbon-storing ecosystems. These options are even more effective when coupled with investment in innovative practices that divert waste into valuable resources, such as reclaimed water, biofuel and fertilizer.

In Florida, TNC and partners have helped pave the way for more widespread reuse of wastewater, helping craft legislation that bans the use of ocean outfalls that discharge treated wastewater directly to the coastal zone within Southeast Florida by 2025, instead encouraging reuse. 

Make Transformative Change Possible.

We depend on nature, and nature depends on those of us who care enough to stand up for it.

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Home — Essay Samples — Science — Agriculture — Steps of the Wastewater Treatment Process

Steps of The Wastewater Treatment Process

• Categories: Agriculture Water Pollution Water Quality

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Words: 1105 |

Published: Dec 5, 2018

Words: 1105 | Pages: 2 | 6 min read

Table of contents

Introduction, the steps of the wastewater treatment process, the environmental and health significance, the role of technological advancements.

• Preliminary Treatment : The first step involves the removal of large objects and debris, such as sticks, leaves, and plastics, through screens or gratings. This helps protect downstream equipment from damage and ensures that smaller particles can be effectively removed in subsequent treatment stages.
• Primary Treatment : In this phase, the wastewater is allowed to settle in large tanks, allowing solids to settle at the bottom and form sludge. This sludge is then removed and further treated or disposed of. Although primary treatment removes a significant portion of suspended solids, it is not effective in eliminating dissolved contaminants.
• Secondary Treatment : Secondary treatment is designed to remove dissolved and suspended biological matter, such as organic materials and bacteria. It relies on microorganisms to break down these pollutants into less harmful substances. Common methods include activated sludge processes and trickling filters, which provide a habitat for beneficial bacteria to thrive and purify the water.
• Tertiary Treatment : Also known as advanced treatment, this stage goes beyond secondary treatment to further polish the water quality. It involves additional processes like filtration, chemical treatment, and disinfection to remove remaining contaminants, including nutrients (e.g., nitrogen and phosphorus), pathogens, and trace chemicals. The treated water is now safe for release into the environment or for reuse.
• Metcalf & Eddy, Inc., & Tchobanoglous, G. (2002). Wastewater Engineering: Treatment and Reuse. McGraw-Hill Education.
• Cheremisinoff, N. P. (2019). Handbook of Water and Wastewater Treatment Technologies. Butterworth-Heinemann.
• Tchobanoglous, G., Burton, F. L., & Stensel, H. D. (2002). Wastewater Engineering: Treatment and Reuse (Metropolitan Los Angeles Edition). McGraw-Hill.
• Mara, D., & Horan, N. (2003). Handbook of Water and Wastewater Microbiology. Elsevier.
• Khan, S. R., Tawabini, B. S., & Al-Zahrani, M. A. (2019). Advanced Technologies in Water and Wastewater Management. Springer.
• US Environmental Protection Agency. (n.d.). Wastewater Technology Fact Sheet: Membrane Bioreactors.
• World Health Organization. (2011). Guidelines for Drinking-water Quality. World Health Organization.

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• Published: 30 April 2020

Contributions of recycled wastewater to clean water and sanitation Sustainable Development Goals

• Cecilia Tortajada 1  

npj Clean Water volume  3 , Article number:  22 ( 2020 ) Cite this article

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Water resources are essential for every development activity, not only in terms of available quantity but also in terms of quality. Population growth and urbanisation are increasing the number of users and uses of water, making water resources scarcer and more polluted. Changes in rainfall patterns threaten to worsen these effects in many areas. Water scarcity, due to physical lack or pollution, has become one of the most pressing issues globally, a matter of human, economic and environmental insecurity. Wastewater, whose value had not been appreciated until recently, is increasingly recognised as a potential ‘new’ source of clean water for potable and non-potable uses, resulting in social, environmental and economic benefits. This paper discusses the potential of recycled wastewater (also known as reused water) to become a significant source of safe water for drinking purposes and improved sanitation in support of the Sustainable Development Goals.

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Introduction

The Sustainable Development Goals (SDGs) are the most recent attempt by the international community to mobilise government, private and non-governmental actors at national, regional and local levels to improve the quality of life of billions of people in the developed and developing worlds. The goals are an ambitious, challenging and much-needed action plan for “people, planet and prosperity” until the year 2030 1 .

Of the 17 SDGs, the sixth goal is to “ensure availability and sustainable management of water and sanitation for all”. The achievement of this goal, even if partially, would greatly benefit humankind, given the importance of clean water for overall socio-economic development and quality of life, including health and environmental protection.

In 2000, the Millennium Development Goals (MDGs) aimed at reducing by half the proportion of the population without sustainable access to safe drinking water and sanitation by 2015. This objective, however, did not take into consideration water quality or wastewater management aspects, which represented a main limitation for its achievement 2 . This omission has been rectified in the Sustainable Development Goals (SDGs), where one of the goals (SDG 6) calls for clean water and sanitation for all people by ensuring “availability and sustainable management of water and sanitation for all”. Among other aspects, it considers improvement of water quality by reducing by half the amount of wastewater that is not treated, and increasing recycling and safe reuse globally. This will result in the availability of more clean water for all uses, and on an enormous progress on sanitation and wastewater management. This target unequivocally indicates the close interrelation between clean water, sanitation and wastewater management, giving these two last aspects the importance they deserve. No government of any human settlement irrespective of its size, be it a megacity, mid-size city or large or small town, can provide clean water without concurrently considering sanitation and wastewater management. Clean water is not, and will never be possible, if wastewater is not collected, treated and disposed properly for the intended uses.

Constraints for the provision of clean water and sanitation for all are complex, and depend on decisions of actors at all levels of government, private sector, non-governmental organisations and the public. They are also determined by broad development policies that may or may not prioritise provision of these services over the long-term, national and local action plans that, even when properly formulated, are often not adequately implemented due to short-term planning, lack of managerial, financial and/or man-power capacity and water needs of other sectors such as the energy or agriculture sectors on which the water sector has limited say or control. The most damaging limitation is often political will that is not sustained and that depends on political interests and electoral cycles. These aspects as well as many others that hampered the progress of the MDGs and represent serious constraints for the SDGs include discrepancy between global goals and national and local limitations, lack of continuity in decisions, policies and investments from one administration to the other, poor or inexistent data that inform decision-making or disadvantaged populations that do not have access to appropriate water and sanitation services 3 .

In most developing countries, provision of clean water and, to a certain degree, also sanitation services, are prioritised over other services. Nevertheless, this prioritisation is not always accompanied by sustained support, resources, or interest. Regarding wastewater management, this is simply left behind. There does not seem to be appreciation of the numerous negative impacts wastewater and related pollution have for provision of clean water, and how much they adversely affect human health and the environment.

It is a fact that water resources globally are under pressure from economic development, population growth, urbanisation, and more recently, climate variability and change; however, it is also pollution to a large extent what is restricting the availability of water for all people for all uses in quantity and quality. It is difficult to find a solution because, as discussed earlier, this depends on numerous technical and non-technical decisions that are taken without analysing their implications on water availability. The situations are further exacerbated by legal and regulatory frameworks that are not implementable, absence of long-term planning, inadequate management and governance, government capability, neglect of demand-side practices (pricing and non-pricing measures), disregard of awareness building including attitudes and behaviour, and poor intersectoral collaboration. Adequate consideration of these aspects depends on economic, social, environmental, cultural and political contexts and institutional capabilities of the places where they are implemented. Properly pursuing SDGs in general, and SDG 6 in particular, have the potential to improve not only access to water and sanitation and quality of life of billions of people, but also contributing towards better capacities of national and local governments.

SDGs main targets of reducing by half the amount of wastewater that is not treated, and increasing recycling and safe reuse present the distinct possibility of producing ‘new’ sources of clean water for all uses that would not be available otherwise. It would further mean that wastewater discharged to water bodies would be cleaner and safer than what it is at present, and that source water for communities downstream would be of much better quality. It would further contribute to improvements in aquatic environments.

Potable water reuse is not new. However, what has made it more relevant at local and also at national levels such as in Singapore, and now potentially in United States, is growing water scarcity and pollution that is reducing water resources available for larger populations and more uses.

The rest of the paper presents the poor status of water quality globally, and discusses the distinct potential wastewater treatment and reuse have to produce new sources of clean water, as well as to improve sanitation and wastewater management, supporting the UN’s development goal of clean water and sanitation for all. This would also contribute, at least partially, to the progress of several others non-water related SDGs such as poverty alleviation, good health and well-being, and improved education and gender equality. Examples of projects that produce reused water for potable purposes are presented including their benefits, as well as the views of the local populations. Finally, challenges to implement potable water reuse more extensively are discussed.

Results and Discussion

Water pollution and impacts on human health and environment.

Worsening water pollution affects both developed and developing countries. In developing countries, it is mostly due to rapid population growth and urbanisation, increased industrial and other economic activities, and intensification and expansion of agriculture, coupled with lack of local and national legal and institutional capacities (managerial, technical, financial, enforcement, etc.) and political and public apathy to improve and maintain water and wastewater management processes in the long-term. Much attention is given to sanitation, specially to construction of toilets and wastewater treatment plants, but their construction alone will not improve water quality over medium- and long-terms unless commensurate attention is given to significantly improving institutional capacity for planning, management, and implementation 4 .

Water pollution has increased significantly in most rivers in Africa, Asia and Latin America since 1990. Pathogenic and organic pollution has worsened in more than half of river stretches, severely limiting their use. These findings are based on measurements of parameters that indicate pathogen pollution (faecal coliform bacteria), organic pollution (biochemical oxygen demand), and salinity (total dissolved solids) 5 . Although sanitation coverage and wastewater treatment have improved in some countries, they have not been enough to reduce the faecal coliform pollution reaching surface waters 6 . This does not include contamination due to industrial and agricultural wastewater which discharges contain hazardous chemicals, heavy metals, and other inorganic pollutants. Consequently, an estimated 2 billion people use drinking water sources that are contaminated, making millions sick.

According to the Global Burden of Disease studies 7 , between 1990 and 2017, the worst deterioration of water quality was in Southeast Asia, East Asia, and Oceania (86% increase in the parameters measured), North Africa and the Middle East (58% increase), and South Asia (56% increase). Parameters used to estimate unsafe water sources include proportion of individuals globally with access to different water sources (unimproved, improved except for piped supply, or piped water supply), and who have reported use of household water treatment methods such as boiling, filtering, chlorinating or solar filtering (or none of these). For unsafe sanitation, the parameters used are the proportion of individuals with access to different sanitation facilities (unimproved, improved except sewer, or sewer connection).

In developed countries, people’s access to safe sources of water and to sanitation and wastewater services has improved. However, these services still lag behind for people in poor urban, peri-urban, and rural areas, showing inequality among and within communities and regions, with the poorest people generally being in the most difficult situations 8 . Water quality has also improved in general, but pollutants have multiplied and diversified, putting pressure on governments and utilities to improve treatment processes for both drinking water and wastewater 9 .

United States, for example, acknowledges new and long-standing problems. These include a combination of point sources of pollution (such as toxic substances discharged from factories or wastewater treatment plants) and non-point sources (such as runoff from city streets and agricultural sources like farms and ranches). Another problem has been insufficient financial support for municipal wastewater treatment plants 10 . In 2009, according to data reported by the EPA (2009) 11 and the states, 44% of river and stream miles assessed, and 64% of lake acres assessed, did not meet applicable water quality standards and were not apt for one or more intended uses. In 2019, an assessment of lakes at the national level found that ~20% of them had high levels of phosphorus and nitrogen 12 . Although more work is necessary, the United States has the advantage of robust legal and institutional frameworks that have fostered progress in improving quality in drinking water and bodies of water.

Europe is not without problems. According to the European Environment Agency 13 , good chemical status has been achieved for only 38% of surface waters and 74% of groundwater in the EU member states. Surface water bodies are affected mostly by hydromorphological pressures (40%), non-point sources of pollution (38%, mostly agricultural), atmospheric deposition (38%, mainly mercury), point sources of pollution (18%) and water abstraction (7%). In England, only 14% of rivers meet the minimum good status standard; France, Germany, and Greece have been fined by the European Court of Justice for violating regulatory limits on nitrates, with almost a third of monitoring stations in Germany showing levels of nitrates exceeding EU limits.

Risks posed by emerging contaminants such as pharmaceuticals and microplastics are still poorly understood, and thus cannot be adequately incorporated in planning and management of potable water supply. Current and future research on emerging contaminants and their impacts is necessary to fully understand the best management and treatment processes.

Safe reuse for additional sources of safe water

Safe reuse of water resources (using them more than once) is a radical contribution to the old paradigm of water resources management, which seldom considered the value of recycled wastewater and its reuse for potable uses. Larger populations that require more water and produce more wastewater that is not always treated properly, current and projected water scarcity and degradation and water-related health and environmental concerns have led a growing number of cities to treat municipal wastewater to higher quality, and either reusing it for potable and non-potable purposes or discharging it (now cleaner) to the environment. Appropriate regulations, improved technology, more reliable monitoring and control systems, and considerations of public views have made it a feasible alternative to increase the amount of clean water available for potable purposes 14 .

Augmentation of water resources for potable purposes with reused water can be done either directly or indirectly. Terminology varies, but generally, in indirect potable reuse (IPR), reused water is introduced into an environmental buffer (reservoir, river, lake or aquifer) and then treated again as part of the standard supply process. In direct potable reuse (DPR), reused water is sent to a drinking water treatment plant for direct distribution without going through an environmental buffer.

Potable water reuse projects have been implemented in cities in the United States, Namibia, Australia, Belgium, United Kingdom and South Africa, as well as in Singapore 15 . The common denomination in all cases for project development has been water scarcity. All projects have prioritised public health and the environment and risk management. Because water reuse diversifies the water resources available, its value has become more evident during droughts, when surface and groundwater are more limited for all uses.

Local experiences considered successful

This section refers to potable water reuse in several cities, with emphasis on United States because of its current progress in this area.

United States has developed the largest number of water reuse projects of any country, supported by policies and regulations that promote safe reuse of water from recycled wastewater (in 2017, 14 states had policies to address indirect potable reuse and three to address direct potable reuse, compared with eight and none, respectively, in 2012). Measures have been taken to improve use and management of freshwater resources, developing water management tools and drought preparedness plans, conservation actions, addressing dependence on expensive inter-basin water transfers, assessing climate change, and revising water reuse from the knowledge, management, technological, financial, and public-opinion viewpoints.

In US, there are no specific federal regulations for potable water reuse; however, all potable water should meet federal and state water quality regulations, such as the Safe Drinking Water Act and the Clean Water Act. In parallel to these Acts, several states have developed their own regulations or guidelines governing indirect potable reuse, while direct potable reuse facilities are currently considered on a case-by-case basis. In Big Spring and Wichita Falls, Texas, direct potable reuse has been implemented as the most effective, or the only feasible way to provide clean water 16 .

California is the most progressive state regarding indirect potable water reuse, with the most developed regulatory frameworks. For more than 50 years, several cities have implemented planned replenishment of groundwater basins with reused water. Regulations were adopted in 1978 and revised in 2014. In 2018, indirect potable reuse regulations of surface water augmentation were adopted. They allow reused water to be added to surface water reservoirs that are used as sources of drinking water 17 . No project has been implemented yet but the first two (in San Diego County) are expected to be completed by 2022.

The state does not have regulations for direct potable reuse at present. However, the State Water Board is working on a Proposed Framework for Regulating Direct Potable Reuse to develop uniform water recycling criteria that will protect public health, and avoid “discontinuities” in the risk assessment/risk management approach as progressively more difficult conditions are addressed 18 .

The best-known potable reuse project in California, in the country, and internationally, is the Orange Country Groundwater Replenishment System. Indirect potable reuse has been the long-term response of the district (as has been for the state) to provide clean water for growing human and environmental needs. The system supplies potable reused water for ~850,000 people. Reused water is for recharging the groundwater basin to protect it from seawater intrusion. A final expansion project will increase the system’s treatment capacity, enabling the district to continue protecting the groundwater basin and providing clean water to its growing population 19 . The project is considered a precursor and benchmark for subsequent water reuse projects in El Paso, Texas, the West Basin Water Recycling Plant in California and the Scottsdale Water Campus in Arizona.

A recent initiative of the EPA, the National Water Reuse Action Plan, has the potential to implement water reuse at the national level. This Action Plan, announced in February 2020, has the objective to secure the country’s water future for all uses by improving security, sustainability, and resilience of water resources through water reuse and identify types of collaboration between governmental and nongovernmental organisations to make this possible. The plan also aims to address policy, programmatic issues, and science and technology gaps to better inform related regulations and policies 20 .

Reused water has also been produced in Windhoek and Singapore. Windhoek is the first example of direct potable reuse globally from 1968, as the best, and only alternative to water scarcity, exacerbated by recurrent droughts 21 . Given its importance for water security, potable reuse has been considered for decades as a strategic component of water resources management. During the very severe drought in 2015–2017, surface water (the main water source) fell to 2% of supply from the normal 75%, putting enormous pressure on the water system and on the domestic, commercial and industrial sectors. Most of the water used to replace the surface water was drawn from the local aquifer, and potable reused water increased to 30% of supply 22 . Potable water reuse additional domestic supplies and domestic water rationing was not necessary. From October 2019 and through the writing of this article in early 2020, Windhoek faced another very severe drought during which potable water reuse also represented an essential source of clean water for potable purposes, until it finally rained.

In Singapore, production of NEWater (as reused water is known) started in 2003 as part of a long-term strategy to diversify water resources and reduce Singapore’s dependence on water imported from Johor, Malaysia, with a goal of resilience and self-sufficiency by 2060. Reused water meets ~40% of Singapore’s daily water needs and will cover ~55% by 2060. During dry months, NEWater is added to the reservoirs to blend with raw water before undergoing treatment and being supplied for potable use 23 . While water reuse was not a new concept in 2003, what has been significant in this case is its large-scale implementation and the wide public acceptance of indirect potable and direct non-potable reuse due comprehensive education and communication strategies 24 . These emphasise the water-scarcity reality in the city-state and the importance of water reuse to produce the water that is needed for overall development.

In Europe, the EU recognises the importance of reducing pressures on the water environment due to water scarcity, and encourages efficient resource use. Its policy on water reuse does not include potable uses, leaving this decision to the member states; it refers only to non-potable uses, with focus on irrigation for agriculture 25 .

Within this framework, the only two projects that have been developed in the region so far are the Langford Recycling Scheme in United Kingdom and Torrelle plant in Belgium. Both produce water to be used indirectly for drinking water supplies. The Langford Recycling Scheme operates only when the flow of the River Chelmer is low, supplying up to 70% of the flow during drought periods. The highest production has been during drought periods in 2005–2006 and 2010–2011 26 . In Belgium, Torrelle plant supplies safe drinking water to nearby communities, ~60,000 people in 2012, and is also used for artificial recharge of the dune aquifer of Saint-André preventing seawater intrusion 27 .

Table 1 presents an overview of the projects mentioned above 28 . In the decades over which these projects have supplied drinking water, no negative health effects have been documented.

Local experiences where challenges remain

The most recent potable reuse projects that have been stopped are in Australia. The country has robust legal and regulatory frameworks to support potable reuse 29 , but so far only one project has been successfully implemented, in Perth, Western Australia 30 . Two potable water reuse projects in Queensland have been halted due to health concerns, poor communication and public opposition in one case (Toowoomba 31 ), and on lack of political support in the other case (Western Corridor Recycled Water Project) 32 . In both cases, decisions were taken even when there were concerns on the impacts of climate change in the region and the possibility that rainfall patterns might not be appropriate for future purposes.

Acceptance of potable water reuse requires robust regulations and advanced technology; however, it also requires serious consideration of the soft-aspects such as education, communication and engagement of politicians, decision-makers and the public, and emotional response and trust 33 . Messages should not be limited to the benefits of the projects. They should also discuss aspects such as water quality and safety, water supply alternatives and their feasibility and costs, risk management, and implications for those who will consume the water 34 .

In the developing world, cities in Brazil, Mexico, Kuwait, and India have constructed or are planning projects, for potable water reuse. Their possibilities to succeed are limited as projects would have to be implemented within regulatory, institutional, governance, management, financial and technological frameworks that are robust and promote innovation, and utilities would have to ensure technical, managerial and financial capacities in the long-term. A serious limitation is that water management in general, and collection and conventional treatment of municipal and industrial wastewater in particular, are still challenging; often water quality standards and monitoring are poorly enforced, and risk assessment frameworks are lacking. Irrespective of how important potable water reuse is for clean water and sanitation goals at local, regional and national levels, challenges remain for its extended implementation.

Knowledge gaps and research needs

Protection of human health and the environment is paramount for any source of drinking water, be it reused water or not. To ensure reused water is safe for potable purposes, it is crucial that it meets standards for pathogens and chemicals (federal, state and local), monitoring is robust, comprehensive and continuous, reporting and independent auditing are performed and knowledge gaps and research needs are addressed 35 .

Overall, types of research needed include further evaluations of common drinking water treatment processes and their inactivation and/or removal efficiency, regulated and unregulated contaminants and their expected presence in reused water, microbial, chemical, radiological and emerging contaminants, monitoring of the influents and effluents of water treatment plants and real-time monitoring of water as it passes through the treatment train. This will facilitate rapid responses, immediately identifying any changes in the water quality due to pathogens or chemical pollutants, detect their types and amounts, and decide on the most appropriate response 36 . General risks can also be reduced through wastewater source control, water source diversification and allocation of risks, so that each party can manage the different risks.

A growing area of concern is the presence of commonly used chemicals and emerging contaminants, their mixture even at low doses, and their effect in human health and ecosystems. This is particularly important if they are detected more often in advanced treated water as they can cause acute or chronic diseases. Better regulations, and improved treatment and monitoring have been identified as key to address the above issues and comply with potable water quality parameters 37 . Web-based data analytics and a system for population water reporting are also important as they will enhance data collection, and increase information accessibility.

To further understand risks of emerging contaminants, major research efforts based on toxicological and epidemiological studies have been carried out. At present, however, health and environmental protection relies in the measurement of chemical and microbiological parameters and the application of formal processes of risk assessment. The objective is that identification, quantification and use of risk information informs decision-making on social and environmental impacts and benefits, as well as on financial costs 38 . Effects on vulnerable groups like infants, elderly, pregnant women, and persons who are already ill, are less understood and thus require additional research.

In direct potable reuse, the absence of an environmental buffer means shorter failure response times, which may affect the ability of plant operators to stop operations if off-specification water is detected. In these cases, supplementary treatment, monitoring, and engineered buffers are expected to provide equivalent protection of public health and response time if water quality specifications are not met 39 .

Table 2 lists benefits and challenges related to potable water reuse. It does not intend to be exhaustive, but to indicate the most relevant issues in both cases.

Potable water reuse schemes are subject to stringent regulations. They follow risk assessment and drinking water safety plans, which include pilot studies, process control considerations, standards, monitoring and auditing of water quality, consideration of stakeholders and public perceptions and risk minimisation, among other factors. Treatment technologies used are advanced and require membrane filtration and ultraviolet disinfection to remove or destroy viruses, bacteria, chemicals, and other constituents of concern as part of the process of converting wastewater into a clean, safe source of municipal drinking water. Reused water is thus cleaner, and safer, than river flows in many cities, especially in the developing world, where improperly treated (or, more commonly, untreated) wastewater is normally discharged.

Potable water reuse and the SDG for water and sanitation

Proper treatment of wastewater and safe reuse are prerequisites if the main targets of Goal 6 are to be reached by 2030. Failure to achieve this goal will mean that health and living conditions of billions of people will suffer, as they have suffered until now, or even more, as populations are growing and water resources are scarcer and more polluted.

Wastewater that is treated and safely reused for potable purposes becomes a new source of water that can be supplied to growing populations. Examples mentioned earlier show that there are thousands of people with access to clean water due to potable water reuse. This is water that would not be available otherwise. Potable water reuse has become more relevant during drought periods when populations with access to reused water have not suffered of water rationing, while people elsewhere without this alternative have not had the same opportunity.

Potable water reuse represents a reliable alternative way to produce safe water, improve the quality of water in receiving water bodies, and mitigate water scarcity for all uses, contributing to the SDG on clean water and sanitation. More broadly, to improve overall quality of life. However, such projects alone cannot enable the achievement of SDG 6, and produce all the safe water the world is running short of at present and will need in the future. As argued earlier, water reuse is part of comprehensive water planning and management strategies.

Water scarcity needs to be approached holistically. At present and looking towards the future, when demands for safe water will be more pressing and water resources will be less available than now, all alternatives for water supply must be considered, potable water reuse included.

The study followed a three-method approach. The first was literature review and analysis to understand the range of issues that determine the extent of the contributions of water reuse towards the realisation of clean water and sanitation Sustainable Development Goals in specific, and to the progress of several other non-water related SDGs positively influencing quality of life. Following the review and analysis, the second approach was the discussion of water reuse projects that have been operational for decades and that have rendered numerous benefits to the population in terms of safe water and sanitation, as well as projects that have been halted due to health concerns and insufficient involvement of the public. Finally, the most recent initiatives to strengthen and diversity the water resources available at the national level, e.g., United States, are presented to emphasise the fundamental role of water reuse towards fulfilment of the SDGs on clean water and sanitation.

United Nations General Assembly (UNGA). Transforming Our World: The 2030 Agenda for Sustainable Development, Seventieth Session Agenda items 15 and 116 , https://www.unfpa.org/sites/default/files/resource-pdf/Resolution_A_RES_70_1_EN.pdf (2015).

Bain, R. E. S. et al. Accounting for water quality in monitoring access to safe drinking-water as part of the Millennium Development Goals: lessons from five countries. Bull. World Health Organ. 90 , 228–235 (2012).

Article   Google Scholar  

United Nations. Water Global Analysis and Assessment of Sanitation and Drinking Water (GLAAS) 2017 Report: Financing Universal Water, Sanitation and Hygiene under the Sustainable Development Goals , https://www.who.int/water_sanitation_health/monitoring/investments/glaas/en/ (2017).

2030 Water Resources Group and Council of Energy (Environment and Water). Circular Economy Pathways for Municipal Wastewater Management in India: A Practitioner’s Guide , https://www.2030wrg.org/wp-content/uploads/2017/01/Circular-Economy-Pathways-India.pdf (2016).

United Nations Environment Programme (UNEP). A Snapshot of the World’s Water Quality: Towards a Global Assessment , https://uneplive.unep.org/media/docs/assessments/unep_wwqa_report_web.pdf (2016).

United Nations Children’s Fund (UNICEF). Water, Sanitation and Hygiene (WASH): Annual Report 2013 , https://www.unicef.org/wash/files/WASH_Annual_Report_Final_7_2_Low_Res.pdf (2014).

Stanaway, J. D. et al. Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990–2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet 392 , 1923–1945 (2018).

Hall, N. L., Creamer, S., Anders, W., Slatyer, A. & Hill, P. S. Water and health interlinkages of the sustainable development goals in remote indigenous australia. npj Clean Water 3 , 10 (2020).

Damania, R., Desbureaux, S., Rodella, A. S., Russ, J. & Zaveri, E. Quality Unknown: The Invisible Water Crisis , https://openknowledge.worldbank.org/bitstream/handle/10986/32245/9781464814594.pdf?sequence=8&isAllowed=y (2019).

Copeland, C. Water Quality Issues in the 114th Congress: An Overview . Report, https://fas.org/sgp/crs/misc/R43867.pdf (2016).

U.S. Environmental Protection Agency (USEPA). National Water Quality Inventory: Report to Congress 2004 Reporting Cycle . EPA 841-R-08-001 (USEPA, Washington, D.C., 2009).

U.S. Environmental Protection Agency (USEPA). National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes . EPA 841-R-09-001 (U.S. Environmental Protection Agency, Office of Water and Office of Research and Development, Washington, D.C., 2009).

European Environment Agency (EEA). European Waters—Assessment of Status and Pressures . Report No. 7/2018, https://www.eea.europa.eu/publications/state-of-water (2018).

Lazarova, V., Asano, T., Bahri, A. & Anderson, J. Milestones in Water Reuse (International Water Association, London, 2012).

U.S. Environmental Protection Agency (USEPA). 2017 Potable Reuse Compendium . EPA-CDM CRADA 844-15, https://www.epa.gov/sites/production/files/2018-01/documents/potablereusecompendium_3.pdf (2017).

Texas Water Development Board. Final Report Direct Potable Reuse Resource Document , https://www.twdb.texas.gov/publications/reports/contracted_reports/doc/1248321508_Vol1.pdf (2015).

State Water Resources Control Board Resolution No. 2018-0014. Adopting the proposed regulations for surface water augmentation using recycled water https://www.waterboards.ca.gov/board_decisions/adopted_orders/resolutions/2018/rs2018_0014_with_regs.pdf (2018).

California Water Boards. A Proposed Framework for Regulating Direct Potable Reuse in California , https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/direct_potable_reuse.html (2019).

World Health Organization (WHO). Potable Reuse: Guidance for Producing Safe Drinking-Water , http://apps.who.int/iris/bitstream/handle/10665/258715/9789241512770-eng.pdf?sequence=1 (2017).

U. S. Environmental Protection Agency (USEPA). National Water Reuse Action Plan. Collaborative Implementation Version I , https://www.epa.gov/sites/production/files/2020-02/documents/national-water-reuse-action-plan-collaborative-implementation-version-1.pdf (2020).

van Rensburg, P. Overcoming global water reuse barriers: the Windhoek experience. Int. J. Water Resour. D. 32 , 622–636 (2016).

Tortajada, C. & van Rensburg, P. Drink more recycled wastewater. Nature 577 , 26–28 (2020).

Article   CAS   Google Scholar  

Public Utilities Board (PUB). Annual Report 2016/17 , https://www.pub.gov.sg/Documents/annualreport2017.pdf (2017).

Tortajada, C., Joshi, Y. & Biswas, A. K. The Singapore Water Story: Sustainable Development in an Urban City State (Routledge, 2013).

European Commission (EU). Commission Staff Working Document. The Fitness Check of EU Freshwater Policy , https://ec.europa.eu/environment/water/blueprint/pdf/SWD-2012-393.pdf (2012).

Janbakhsh, A. Langford Recycling Scheme: United Kingdom-Langford. In 2012 Guidelines for Water Reuse , E114–E115, https://www3.epa.gov/region1/npdes/merrimackstation/pdfs/ar/AR-1530.pdf (2012).

Van Houtte, E. & Verbauwhede, J. Sustainable groundwater management using reclaimed water: the Torreele/St. Andre case in Flanders, Belgium. J. Water Supply Res. T 61 , 473–483 (2012).

U.S. Environmental Protection Agency (USEPA). Guidelines for Water Reuse . EPA/600/R-12/618, https://www.epa.gov/sites/production/files/2019-08/documents/2012-guidelines-water-reuse.pdf (2012).

Environment Protection and Heritage Council, the Natural Resource Management Ministerial Council and the Australian Health Minister's Conference. Guidelines for Water Recycling: Managing Health and Environmental Risks (Phase 2). Augmentation of Drinking Water Supplies, https://www.waterquality.gov.au/media/85 (2008).

Moscovis, V. Groundwater Replenishment Trial Final Report , https://www.watercorporation.com.au/-/media/files/residential/water-supply/gwrt/gwrt-final-report.pdf (2013).

Hurlimann, A. & Dolnicar, S. When public opposition defeats alternative water projects—the case of Toowoomba Australia. Water Res. 44 , 287–297 (2010).

Australian Academy of Technological Sciences and Engineering (ATSE). Drinking Water through Recycling: The Benefits and Costs of Supplying Direct to the Distribution System (ATSE, Melbourne, 2013).

Macpherson, L. & Snyder, S. Downstream—Context, Understanding, Acceptance: Effect of Prior Knowledge of Unplanned Potable Reuse on the Acceptance of Planned Potable Reuse (Water Reuse Research Foundation, Alexandria, VA, 2013).

National Academies of Sciences, Engineering, and Medicine. Future Water Priorities for the Nation: Directions for the U.S. Geological Survey Water Mission Area , https://doi.org/10.17226/25134 (2018).

National Research Council. Water Reuse: Potential for Expanding the Nation’s Water Supply through Reuse of Municipal Wastewater , https://doi.org/10.17226/13303 (2012).

National Research Council (NRC). Classifying Drinking Water Contaminants for Regulatory Consideration , https://doi.org/10.17226/10080 (2001).

Water Environment Federation (WEF). Water Reuse Roadmap Primer , https://www.wef.org/globalassets/assets-wef/direct-download-library/public/03---resources/wef_water_reuse_roadmap_primer.pdf (2016).

UK Water Industry Research Limited. A Protocol for Developing Water Reuse Criteria with Reference for Drinking Water Supplies , https://www.waterboards.ca.gov/water_issues/programs/grants_loans/water_recycling/research/02_011.pdf (2005).

California Water Resources Control Boards. Recommendations of the Advisory Group on the Feasibility of Developing Uniform Water Criteria for Direct Potable Reuse , https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/rw_dpr_criteria.html (2020).

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Acknowledgements

This research was funded by the Institute of Water Policy, Lee Kuan Yew School of Public Policy, National University of Singapore. Grant R-603-000-289-490.

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Scaling up water reuse: Why recycling our wastewater makes sense

Nico saporiti, elleanor robins.

In Durban, South Africa’s third largest city, an amount of wastewater equivalent to 13 Olympic-sized swimming pools has been treated and reused for industrial use by a paper mill and a local refinery every day since 2001.

A public-private partnership (PPP) between the city and a private environmental services company made this achievement possible. And it is a good example of how wastewater reuse is helping some cities address critical water shortages.

Wastewater reuse — recycling and reusing water from our sewerage systems — may prompt what is quite simply known as the “yuck” factor. People are naturally squeamish about the idea of reusing water that comes from our toilets, even though it’s actually quite common. Wastewater reuse has been around for thousands of years .

In London, a significant portion of the drinking water is indirectly recycled through the River Thames, the main water source for the British capital.  This is also being done in Windhoek, Namibia, where a direct potable reuse scheme has been operating since 1965.

In other places, such as India, Singapore, Mexico and Spain, reused water can provide a valuable water source for key industries, reducing the demand on limited water resources. Power plants, refineries, mills, and factories, including, for instance, those in the auto industry , can use reused water.  

The need is great. Not only do some 4.2 billion people around the world lack access to safely managed sanitation services, but 80 percent of global wastewater is not adequately treated. As much as 36 percent of the global population lives in water-scarce areas, and water demand is expected to rise to 55 percent by 2050 amid rapid urbanization.

At the same time, climate change is creating greater unpredictability and variability in the availability of fresh water. The United Nations estimates that 1.8 billion people will be living in countries or regions with absolute water scarcity by 2025, with Sub Saharan Africa counting the largest number of water-stressed countries of any region.

The COVID-19 pandemic has heightened awareness of both the extent and consequences of the lack of access to a reliable water supply, and has had an impact on the ability of water utilities to make necessary capital investments.  Countries affected by conflict and social fragility are especially vulnerable to water challenges and a deterioration of water services.

All of this matters because, as the World Bank says , gaps in access to water supply and sanitation are among the greatest risks to economic progress, poverty eradication and sustainable development.

Municipal waste and water is also an investment opportunity. An IFC analysis found that if cities in emerging markets focused on low-carbon water and waste as part of their post-COVID recovery, they would catalyze as much as $2 trillion in investments, and create over 23 million new jobs by 2030.

"An IFC analysis found that if cities in emerging markets focused on low-carbon water and waste as part of their post-COVID recovery, they would catalyze as much as $2 trillion in investments, and create over 23 million new jobs by 2030."

The circular economy approach of reusing treated wastewater has potential benefits for millions of people.  It can provide a reliable water source for industrial, agricultural and — occasionally — potable uses, often at lower investment costs and with lower energy use than alternative sources, such as desalination or inter-basin water transfers.

IFC estimates that the cost of producing non-potable recycled water can be as low as $0.32 per cubic meter, and potable water $0.45, compared with more than $0.50 for desalination. 

Treatment of wastewater coupled with effluent reuse also has important direct climate benefits. In many cases, treating sewage water helps reduce greenhouse gas emissions, particularly methane. A well-designed wastewater project allows for better sludge management solutions, such as methane capture and energy generation, which help mitigate the greenhouse gas emissions coming from plants’ operations.

Moreover, water reuse can contribute to helping cities adapt to climate change by providing an additional and sustainable source of fresh water. 

"Water reuse can contribute to helping cities adapt to climate change by providing an additional and sustainable source of fresh water."

The majority of desalination projects globally are privately developed and financed. Yet, as national and local governments in emerging markets continue to face significant gaps in meeting water and sanitation needs and budgetary constraints, well-structured PPPs in wastewater treatment and reuse are increasingly seen as a viable option.

Water reuse projects do come with particular challenges. For one thing, water is a local matter and no one project is like another. Water is also typically managed at a decentralized level, where local utilities may lack resources and capacity, while perceptions of high risk and cost of capital can also raise concerns.

IFC sees an enormous opportunity to assist in this area. Through our new World Bank Group Scaling ReWater initiative, IFC is helping address barriers to investment in wastewater treatment and reuse, while also taking into account affordability concerns. 

Scaling ReWater is a toolkit offering transaction advice, competitive financing solutions, a more straightforward tendering process and a holistic approach designed to mobilize hybrid financing from public and private sources. Our overall objective is to leverage private capital to accelerate the construction of wastewater treatment plants in emerging markets. The World Bank Group welcomes the opportunity to work with our partners to achieve this.

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What Causes Water Pollution and How Do We Solve it?

Water pollution is putting our health at risk. Unsafe water kills more people each year than war and all other forms of violence combined. Meanwhile, less than 1% of the Earth’s freshwater is actually accessible to us and it’s in our best interest to protect what we have, especially considering that by 2050, global demand for freshwater is expected to be one-third greater than it is now. Here are six causes of water pollution, as well as what we can do to reduce it.

Water is uniquely vulnerable to pollution because it’s able to dissolve more substances than any other liquid on Earth. Toxic substances from farms, towns, and factories readily dissolve into and mix with it, which causes water pollution as a result.

6 Most Common Causes of Water Pollution

1. sewage and wastewater .

According to the UN , more than 80% of the world’s wastewater flows back into the environment without being treated or reused; in some least-developed countries, this figure tops 95%. Harmful chemicals and bacteria can be found in sewage and wastewater even after it’s been treated. Households release sewage and wastewater, which makes its way to the ocean, mixing with freshwater and affecting the water quality and marine life. Also, the bacteria and pathogens found in wastewater breed disease, and cause health-related issues in humans and animals. 

2. Oil Spills

Large oil spills and leaks are some of most significant causes of water pollution. These are often caused by oil drilling operations in the ocean, but nearly half of the estimated 1 million tons of oil that makes its way into marine environments each year come not from oil tankers, but from land-based sources like factories, farms and cities. In England and Wales, there are about 3,000 pollution incidents involving oil and fuel each year. Oil makes drinking water unsafe and a substantial amount of oil released into oceans or become river water pollution, will destroy marine life and the ecosystems that support them. What’s more, oil reduces the oxygen supply within the water environment.  Oil is also naturally released from under the ocean floor through fractures known as seeps.

You Might Also Like: How Do Oil Spills Affect the Environment?

3. Industrial Waste

Industrial waste is one of the biggest sources of water contamination. Many industrial sites produce waste in the form of toxic chemicals and pollutants, and some don’t have proper waste management systems in place. Sometimes, industrial waste is dumped into nearby freshwater systems. The toxic chemicals leached from this waste can make the water unsafe for human consumption, and they can also cause the temperature in freshwater systems to change, making them dangerous for marine life. Finally, industrial waste can cause “ dead zones ,” which are areas of water that contain so little oxygen that marine life cannot survive in them.

4. Agricultural Runoff

To protect crops from pests, farmers use pesticides, however when these substances seep into the groundwater, they can harm animals, plants and humans. Additionally, when it rains, the chemicals mix with rainwater, which flows into waterways and creates further pollution. Other agricultural processes such as uncontrolled spreading of slurries and manures, tillage and ploughing the land can also cause water pollution.

5. Marine Dumping and Plastic Pollution in the Sea

Most items collected and dumped into oceans by many countries can take anywhere from two to 200 years to decompose completely! Other sources of waste at sea include plastic and other materials blown or washed from land. Currently, about 11 million metric tons of plastic make their way into the oceans each year. Research has found that should this rate of pollution continues, the amount of ocean plastics will grow to 29 million metric tons per year by 2040. The damage to wildlife habitats and to life on land is incalculable. 

You Might Also Like: 8 Shocking Plastic Pollution Statistics to Know About

6. Radioactive Waste

Radioactive waste can persist in the environment for thousands of years , making disposal a major challenge and one of the most harmful water contaminants. Radioactive waste released from facilities that create nuclear energy can be extremely harmful to the environment and must be disposed of properly; uranium, the element used in the creation of nuclear energy, is a highly toxic chemical. Accidents occur at these facilities from time to time, and toxic waste is released into the environment.

In April 2021, Japan discharged contaminated water containing radioactive materials from the damaged Fukushima nuclear plant into the sea. Though the Japanese government claims potential health risks and damage to marine life to be minimal as the waste water have been treated, close monitoring is required to ensue there are no environment effects from the water pollution. 

You Might Also Like: The Nuclear Waste Disposal Dilemma

How Can You Reduce Water Pollution?

• Reduce your plastic consumption and reuse or recycle plastic when you can. 
• Properly dispose of chemical cleaners, oils and non-biodegradable items.
• Use phosphate-free detergents – phosphates lead to algae blooms and kill fish and other aquatic animals by reducing the oxygen in the water. 
• Dispose of medical waste properly.
• Eat more organic food, which is produced without the use of pesticides.
• Cut down on your meat consumption – raising animals for meat takes lots of water for the grains and other feed they need. Furthermore, the antibiotics and solid waste are both likely to end up in groundwater and rivers.

You Might Also Like: Flood Water Contamination Threatens Communities Living Near Chemical Facilities – Can Private Law Protect Them?

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An Introduction to Global Water Wastage

The globe's use of water has an impact on the environment.

• By Elizabeth Long
• Aug 11, 2022

There are many aspects of daily living that have the power to impact the environment negatively. When taking into account every household, business and service, these factors then have the power to increase environmental damage on a momentous, global scale.

Water waste is just one example of a damaging environmental factor, but it's an extremely significant one. It's very important for individuals, households and businesses alike to understand the impact of water waste on the environment so that the world at large can work to a more sustainable future.

What is Water Wastage and How Does It Occur?

When talking about water waste, this can reference a few key areas. The water waste from a community of people is more commonly known as sewage. Household (or other buildings) wastewater can include the waste from toilets or from actions such as draining kitchen sinks.

Simply using too much water can very easily be done by anyone. Running a very long shower, loading your washing machine too regularly or leaving the tap running when brushing your teeth are all examples of how easy it is to waste this valuable resource.

In regard to sewage and wastewater from your pipes, damaging chemicals or cleaning products may be drained through your pipes, you may be using your sewage system too often, or it's always possible that large water treatment companies are not managing wastewater services in the best way to protect the environment.

What is the Impact of Wastewater on the Environment?

When considering the damage wastewater is capable of, the biggest threats to the environment are contamination and pollution. If sewage is not treated appropriately before being disposed of it, it can contaminate water and thereby put wildlife at great risk.

Furthermore, wastewater dispersed through flooding or leaks means that completely untreated water can enter water sources and pollute them.

The process of treating wastewater also requires fossil fuels. This means that wastewater treatment has the potential to increase carbon footprint and air quality.

Global Water Wastage Statistics

When considering the situation of water wastage and the earth's future, it's important to take into account daily water use and habits within other countries around the world. With these statistics, you can better understand how your own country (and therefore your own effort) is faring in comparison to other countries.

These statistics can show a shocking difference between water use statistics based on different countries. his is an important reminder of how all countries across the world need to work cohesively to lower water wastage and help save the environment. We're all living on the same planet, after all.

Below are the statistics of daily water used on average by individuals in liters in each country.

Japan 286.5

Australia 340

New Zealand 250-300

Mexico 5.419

Germany 121

Belgium 7.406

Italy 6,500

Portugal 6,203

Israel 100-230

Belgium is the biggest daily consumer of water on average by individuals, with 7.406 liters. Kenya is the smallest daily consumer, with 50 liters.

You might expect that the country to house the biggest water consumption on a daily basis would be the country to have the largest population: but China, which does have the world's largest population, has a smaller daily water consumption than Belgium.

It just goes to show how each individual's water usage can make a significant difference.

Countries such as Kenya are often struggling with a water crisis, which throws into sharp relief how valuable a commodity like water is. For countries on this list using a high amount of daily water, countries like Kenya, in comparison, are using very little simply because they do not have access to safe water.

It's now more important than ever to preserve the water that the world does have.

Summarizing Points for Global Wastewater Production, Collection, Treatment, and Reuse

Below are some key facts and statistics in regard to wastewater. This is to help you better understand what happens to your wastewater when it leaves your home or business, is collected, and is treated. This entire process has the potential to affect the environment in a significant way.

Approximately 63 percent of globally produced wastewater is collected. Approximately 52 percent of globally produced wastewater is treated. Approximately 84 percent of collected wastewater undergoes a treatment process. The percentage of wastewater reuse is approximately 11 percent of total wastewater. Approximately 22 percent of treated wastewater goes through intentional reuse. Approximately 84 percent is released into the environment. ( View Statistics here.)

There are significant differences in wastewater production, collection, treatment and reuse across different geographical regions. These differences can also be based on the level of economic development.

As you can see, not all wastewater is capable of being treated and reused to reap the benefits. If only 63 percent of globally produced wastewater is collected, the remaining 37 percent percent is failing to be collected, therefore putting the environment at risk.

6 Key Water and Water Waste Facts

• Only one percent of the world's water is safe for us to consume. This highlights just how precious a resource like water is and what wasting any of this one percent could do.
• It's possible for five gallons of water to be wasted simply by leaving the tap on when you're brushing your teeth.
• Twenty-seven percent of a household's water is used for showers and baths. Think how much water can then be wasted by constantly taking baths, having very long showers, or more than one shower a day.
• Around 3.5 gallons of water is used for a single toilet flush.
• Washing machines can use around 40 gallons of water per load.
• Around 9,400 gallons of water can be wasted through water leaks, based on US figures.

Predictions for the Future

When it comes to the future of the environment on a global scale, the future may appear very bleak in terms of global warming and natural pollution if individuals do not try and make a positive difference today.

In terms of water consumption and supply, key predictions for the future can include:

• A growing world population will significantly increase the demand for water supply.
• Areas of the world that are already seeing difficulty in freshwater supply may have this situation worsen.
• An estimated 1.8 billion people will suffer from water shortage in their area by 2025.
• By 2025, that means two-thirds of the global population will be living in regions of high water stress.
• The global agriculture market will require another one trillion cubic meters of water annually if the increase in population continues to the estimated one billion more mouths to feed by 2025.
• The number of nations expected to be water scarce has increased; this is now projected to be 30 nations by 2025, increased by ten since 1990.
• Global warming will only worsen the water supply situation.
• If current trends don't see any drastic change, the world will only have 60 percent of its necessary water supply in 2030.

Conservation and Sustainability Efforts

Being more conservative and sustainable with water usage is the key to making a positive difference to the current water situation that is facing the world. While plenty of people are already taking action, word must be spread about the importance of not wasting water to ensure people start taking action.

There are three main types of sustainability efforts. They come in the form of:

• Rules and regulations set by countries
• Campaigns to Conserve the Use of Water
• Government Initiatives and Schemes

Each sustainability effort will approach this in its own way, but knowing the different efforts out there that you could support is crucial.

Wastewater Rules and Regulations Across the World

Counties worldwide are already putting in place effective water solutions. Take a look at the facts below to give you a better idea of who has had the most success so far and what regulations countries must follow.

• Based on performance ranking , the top five countries in the world which have the most effective wastewater treatment programs are Malta (100 score), Netherlands (99.9 score), Luxembourg (99.76 score), Spain (99.71 score), and Switzerland (99.67 score).
• Namibia is the only country that uses recycled water for direct potable use.
• The Council Directive 91/271/EEC, set out in 1991, states the official regulations for all members of the European Union in regard to wastewater management. This directive's aim is to protect the environment, and outlines rules such as monitoring the performance of treatment plants, required secondary water treatment, and the collection of water in populations less than 2000, to name a few.

What You Can Do to Waste Less Water

Protecting the environment starts at home. It's extremely important to make active efforts to change your water waste habits. It may seem like an impossible task or a big responsibility when you're viewing the state of the world, but always remember that even the simplest changes you make at home can make a positive difference — and that's just for one person living alone. A family of 4 which develops the same water improvement habits, for example, can make even more of a difference within the same household. It's also important to support other household members, or people you know, in water-saving habits. Always share any information or tips you have, including the ones listed here.

Some ways you can waste less water include:

Install low-flow systems, such as showerheads

Many people opt for a bathroom overhaul or renovation project, so why not make it one which benefits your water consumption, too? Make your home as eco-friendly as possible when it comes to your plumbing.

Not only do low-flow systems help you to preserve water, but they also mean you can save money on your energy bills.

What low flow means is reduced water pressure in order to save as much water as possible. Low flow is particularly beneficial for busy households which see a lot of bathroom traffic.

Take shorter showers and half-full baths

Be more mindful about why you're taking a long shower. It's easily done, especially during winter months, to take a longer, hotter shower. Some people may even decide to multi-task and try brushing their teeth in the shower! Others may put the shower on to get the water running whilst sorting laundry or attending to other bathroom tasks.

Eliminate this excess water waste by turning the shower on when you're ready to get in and limiting your shower to a few minutes.

In regard to baths, if you're taking a quick bath for basic hygiene, you can avoid a completely full bath. If for relaxation, think about limiting your water level by even just an inch or two.

Avoid laundry loads if they are only half full

Laundry can be very difficult to separate and keep on top of, especially within busy households. There may be certain clothing items you desperately need but for which you haven't got enough corresponding clothes or colors to warrant a full load.

Having better organization with your clothing and laundry system will really help. Try to avoid half-full laundry loads. If there are certain clothing items you know you like to wear often, be more organized ahead of time so that you can put items in a full load rather than last-minute half-load panics!

Another tip is to think about the type of materials and colors you're buying. If you have a few delicate items which cannot be used on a normal wash, you might be risking half-full delicate cycles to wash them. Furthermore, you may have a lot more dark colors than you do light, meaning you're forced to run a half-load for your light items only. Avoid this if you can by sticking to colors and materials which can easily be washed together. Let this build up over time so that you eventually have delicate whites in with other white clothes and delicate blacks with colored clothing, which you can put on delicate washes.

Turn off the tap when brushing your teeth

There's no reason for your tap to be on when brushing your teeth, and it's a simple fix that can save a significant amount of water. It's important to let your kids know this, too, if you do have younger family members who brush their teeth without you to supervise.

Turn the tap on when you need a quick burst of water for a refresh, but, otherwise, leave the tap off.

Only fill the sink half-full for washing up

Doing the dishes is another daily chore that becomes normality, and you may not realize that you're wasting water. While you do need to fill up your sink to the optimum level for hygiene purposes and an easier clean, you can make small adjustments

to limit water waste.

If you don't have a lot of items to wash, does it warrant a full sink? Or, if you know you're going to need to fill up your sink with fresh water halfway through because of particularly dirty or stubborn items, can you ensure the first load

is shallow if it's going to be replaced?

Collect rainwater

What a Business Can Do to Waste Less Water

Businesses need to try even harder to lower their environmental impact, alongside household habits. Businesses are capable of wasting a significant amount of water, especially those with extremely large premises and lots of employees.

If you're a business manager or owner, here are some things you can do to preserve water:

Have regular water audits conducted

This is essential for preserving water. Being a business leader or owner doesn't mean you'll always know what's best in regard to preserving water. You may not even know the ways in which your business or premises is easily wasting water.

Water audits by professionals can help you to always keep on track and learn about new ways to save on water. This could also help with your business utility bills.

Install water-efficient equipment

This might vary depending on what your business is and what is installed within the premises. Nevertheless, even for the simplest features such as bathroom taps, you can make sure your plumbing and equipment are eco-friendly with water-saving in mind.

This is particularly true of any cafeteria or kitchen equipment you have in the workplace.

Educate employees on water-saving practices

No matter how well-versed the people in charge are in regard to water-saving practices, it can be a large team of employees who have the most negative impact — without knowing it. If you have employees using your premises every day, there is a high amount of potential for water wastage.

It's, therefore, crucial to educate your employees on the importance of an eco-friendly workplace and how they can work to save water on a daily basis. They can then even take these key tips home with them to conduct better practices in their personal life, too. It's much easier for people to develop better water habits when their work life and home life are working hand-in-hand.

Do your research on the best water suppliers

It's always important for businesses to get the best deal when it comes to their water supply, but this is about more than simply the cost. By doing your research on the best water supplier in your area and for your business water demand, you're ensuring you can get the most efficient service with minimal wastage.

Businesses should put a firm focus on good communication for environmental issues, so all employees know what to do within the business premises to preserve water.

If you're not a business leader, but you do work in a business setting, there are good habits you can also adopt as an employee during the working day. Keeping household tips in mind, you can apply the same logic to your work environment.

Is there any way you can collect rainwater on windowsills or outside, which you can then use to water any office plants? Can you ensure you're not overfilling the kettle when making drinks for yourself or the team? If your workplace is one that has an on-site bathroom or changing facility, can you ensure you have short showers?

About the Author

Elizabeth Long is passionate about reducing the negative impact that we have on the environment around us, and learning new ways to sustainably manage our lifestyle. Long favors data-driven articles to help illustrate the scale of the problem for a wider audience.

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Short Essay: Water Pollution

Three short essay examples on water pollution.

Table of Contents

Example 1: Water Pollution Essay

Water pollution is a pressing issue that affects the health of our planet and its inhabitants. It occurs when harmful substances are introduced into bodies of water, such as rivers, lakes, and oceans, leading to detrimental effects on aquatic ecosystems and human health. In this essay, we will explore the causes of water pollution, examine its effects, and discuss potential solutions to mitigate this environmental problem.

Water pollution is primarily caused by human activities, which often result in the discharge of pollutants into water bodies. One of the main contributors to water pollution is industrial waste. Factories and manufacturing processes release various chemicals and toxins into nearby water sources. For example, heavy metals, such as mercury and lead, can be found in industrial wastewater, posing a significant threat to aquatic life and human health. Agricultural activities also play a significant role in water pollution. The use of fertilizers, pesticides, and herbicides in farming practices can lead to runoff, carrying these chemicals into nearby water bodies. This runoff not only contaminates the water but also disrupts the balance of nutrients, leading to harmful algal blooms and the depletion of oxygen levels, which can be fatal to aquatic organisms. Furthermore, urbanization has a significant impact on water pollution. Improper disposal of sewage and stormwater runoff can contaminate water sources with harmful bacteria and pathogens. Inadequate wastewater treatment facilities and aging infrastructure contribute to the release of untreated sewage into rivers and oceans, posing a threat to both aquatic life and human health.

The consequences of water pollution are far-reaching and have severe ecological, human health, and economic impacts. Ecologically, water pollution leads to the destruction of aquatic ecosystems and the loss of biodiversity. Pollutants in the water can disrupt the natural balance, leading to the decline or extinction of species. Additionally, the accumulation of toxins in the food chain can have long-term effects on the entire ecosystem. Water pollution also poses risks to human health. Consumption of contaminated water can lead to various diseases and illnesses, such as gastrointestinal problems, skin infections, and even cancer. Moreover, the presence of pollutants in water sources can contaminate the food we consume, affecting the overall quality and safety of our diet. The economic consequences of water pollution are significant as well. Polluted water bodies deter tourists from visiting, leading to a decline in tourism revenue. Additionally, water pollution can devastate fishing and farming industries, as contaminated water can harm aquatic organisms and crops, reducing yields and impacting livelihoods.

To address the issue of water pollution, it is crucial to implement effective solutions. Regulatory measures play a vital role in mitigating water pollution. Governments must enforce strict environmental laws and regulations to ensure that industries and agricultural activities adhere to proper waste management practices. This includes monitoring and limiting the discharge of pollutants into water bodies. Improved waste management practices are also essential in reducing water pollution. Industries should invest in proper treatment and disposal methods for their waste, minimizing the release of harmful substances into water sources. Similarly, farmers must adopt sustainable agricultural practices, such as using organic fertilizers and implementing erosion control measures, to prevent runoff and contamination.

Example 2: Water Pollution Essay

Water pollution is a pressing issue that affects both the environment and human health. With the increasing industrialization and urbanization of societies, the contamination of water sources has become a major concern. This essay will explore the sources of water pollution, the impact it has on the environment, and the consequences it has on human health. By understanding the causes and effects of water pollution, we can work towards implementing effective solutions to mitigate its detrimental effects.

One of the primary sources of water pollution is industrial activities. Industries release a wide range of pollutants into water bodies, including chemicals, heavy metals, and waste materials. For example, factories that produce chemicals often discharge toxic substances directly into nearby rivers or lakes, contaminating the water and posing a threat to aquatic life. Furthermore, industrial waste from mining operations can contain heavy metals such as lead, mercury, and cadmium, which can have severe health effects on both humans and animals when consumed. Another significant contributor to water pollution is agricultural practices. The use of fertilizers, pesticides, and animal waste in farming leads to the contamination of water sources. When these substances are washed off the fields during rainfall or irrigation, they seep into groundwater or flow into nearby rivers and lakes. This pollution not only affects the quality of the water but also disrupts the delicate balance of ecosystems, leading to the decline of various species.

Water pollution has a profound impact on the environment, particularly on aquatic ecosystems. The contamination of water bodies can result in the death of fish, plants, and other aquatic organisms. For instance, when industrial pollutants or agricultural runoff enter a river, the high concentrations of chemicals or excess nutrients can cause fish kills, as the organisms are unable to survive in such conditions. Additionally, water pollution leads to a loss of biodiversity. As certain species are unable to tolerate the polluted environment, their populations decline, disrupting the natural balance of ecosystems. Moreover, excessive nutrients in water bodies, such as nitrogen and phosphorus from agricultural runoff, can trigger algal blooms. These blooms deplete oxygen levels in the water, creating dead zones where aquatic life cannot survive. This further exacerbates the destruction of aquatic ecosystems and the loss of biodiversity.

Water pollution not only harms the environment but also poses significant risks to human health. Contaminated water is a major carrier of waterborne diseases, which can have severe consequences for communities. For example, the consumption of water contaminated with fecal matter can lead to diseases such as cholera, typhoid, and dysentery. These diseases can cause severe dehydration and even death, particularly in areas with limited access to clean water and sanitation facilities. Furthermore, exposure to certain pollutants in drinking water can increase the risk of cancer. Heavy metals such as arsenic and lead, as well as chemicals like pesticides and industrial solvents, have been linked to the development of various types of cancer. Lastly, water pollution has negative effects on livelihoods. Polluted water affects industries such as fishing, agriculture, and tourism, leading to economic losses for communities dependent on these activities. For instance, contaminated water bodies can result in the death of fish populations, impacting the livelihoods of fishermen and the availability of a valuable food source.

Example 3: Water Pollution Essay

Water pollution is a pressing environmental issue that has significant consequences for both the ecosystem and human health. It occurs when contaminants are introduced into water bodies, such as rivers, lakes, and oceans, making the water unfit for its intended use. This essay will explore the sources and causes of water pollution, the impact it has on the environment, and the solutions and prevention methods that can be implemented to address this problem.

Water pollution can be attributed to various sources and causes, many of which are directly linked to human activities. One of the primary sources of water pollution is industrial activities, which release a wide range of pollutants into water bodies. Industrial wastewater, containing toxic chemicals and heavy metals, is often discharged untreated into nearby rivers and streams. For example, the textile industry is known to release dyes and chemicals used in the dyeing process, leading to the contamination of water sources. Agricultural practices also contribute significantly to water pollution. The use of fertilizers and pesticides in farming leads to the runoff of these chemicals into nearby water bodies. This agricultural runoff contains high levels of nitrogen and phosphorous, which can cause excessive growth of algae in water bodies, leading to eutrophication. Additionally, the improper disposal of animal waste from livestock farming can contaminate water sources with pathogens and harmful bacteria. Domestic sewage and improper waste disposal are another major cause of water pollution. In many developing countries, inadequate sanitation systems result in untreated sewage being released directly into rivers and oceans. Furthermore, improper waste disposal, such as dumping of plastics and other non-biodegradable materials, leads to the accumulation of debris in water bodies, posing a threat to marine life.

The consequences of water pollution on the environment are far-reaching. One of the most significant impacts is the destruction of aquatic ecosystems and the loss of biodiversity. Pollutants in the water can disrupt the delicate balance of these ecosystems, leading to the death of aquatic plants and animals. This disruption can have a cascading effect on the entire food chain, ultimately resulting in the loss of biodiversity. Water pollution also poses a threat to the availability of safe drinking water sources. Contaminated water sources can contain harmful bacteria, viruses, and chemicals, making them unfit for human consumption. This can lead to widespread outbreaks of waterborne diseases, such as cholera and dysentery, particularly in areas with inadequate access to clean water and sanitation facilities. Furthermore, water pollution has detrimental effects on marine life and fisheries. Toxic chemicals and pollutants can accumulate in the tissues of marine organisms, making them unsafe for consumption. This not only impacts the livelihoods of communities dependent on fishing but also disrupts the delicate balance of marine ecosystems, leading to the decline of fish populations and the loss of valuable marine species.

Addressing water pollution requires a comprehensive approach that involves both individual actions and collective efforts. One of the key solutions is the implementation of strict regulations and the enforcement of laws to control industrial pollution. Governments should establish and enforce stringent standards for industrial wastewater treatment, ensuring that pollutants are effectively removed before being discharged into water bodies.

About Mr. Greg

Mr. Greg is an English teacher from Edinburgh, Scotland, currently based in Hong Kong. He has over 5 years teaching experience and recently completed his PGCE at the University of Essex Online. In 2013, he graduated from Edinburgh Napier University with a BEng(Hons) in Computing, with a focus on social media.

Mr. Greg’s English Cloud was created in 2020 during the pandemic, aiming to provide students and parents with resources to help facilitate their learning at home.

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• Waste Water Story

What is Waste Water?

It is a type of water which is contaminated by human use like washing of clothes, industrial discharge, commercial as well as agricultural activities. As all these contaminating sources disturb the quality of water which leads to contamination of water. Contamination also depends on various sources or products such as domestic wastewater, municipal wastewater i.e sewage and industrial waste of chimanies. Wastewater mainly contains physical, chemical and biological pollutants. We can purify this contaminated water by various methods, there are so many power plants which do purification processes.

Effects of Contaminant on Quality of Water:

There are various harmful result noticed due to contamination of water, some of them are listed below:

Loss of Aquatic Organisms: Aquatic organisms are harmed due to contaminated water. As discharges and runoff of harmful contaminants like pesticides  into waterways can be lethal to aquatic life, causing death of fishes, prawns, etc.

Loss of Local Invertebrate Species: As these small invertebrates are food for fishes and other aquatic organisms. Death of these invertebrates lead to starvation for those aquatic organisms who are dependent on them for food and they start migrating to other water bodies exposing them to greater risk and stress.

Decrease in Biochemical Oxygen Demand(BOD): Due to waste or harmful contaminants they use up natural oxygen present in the water body. Excess nutrients can also lead to algal blooms and oxygen is used up when the algae die and decompose. Decrease in available oxygen causes difficulty in breathing to aquatic organisms.

Contaminant increases turbidity and decreases water clarity of water thus making water murky. So this aquatic organism is not able to find their prey and detect predators.

Contaminated water causes internal damage to aquatic organisms as they reduce the reproductive ability of aquatic organisms, decrease in immunity, causes disorder in the central nervous system, etc.

Types of Water Pollution Depending on Different Source:

Surface Water Pollution: This type of pollution includes pollution in rivers, lakes and oceans. Here water sources are contaminated by various means like industrial waste, release of sewage waste, etc.

Marine Pollution: one of the common ways by which contaminants enter the sea are rivers. Here directly discharging sewage and industrial waste into the ocean causes pollution into oceans.  Plastic debris can absorb toxic chemicals from ocean pollution, potentially poisoning any creature that eats it.

Groundwater Pollution: Use of pesticides and insecticides causes contamination of groundwater. Groundwater pollution is directly connected to soil pollution.

Wastewater Management:

Wastewater treatment is a several step process and by going through these process we purify contaminant water:

Steps performed during purification of contaminated water:

Wastewater Collection

Primary Treatment

Secondary Treatment

Final Treatment

Wastewater Collection:

Very first step in the purification process is collection of water in a storing tank which further goes through various filtration steps.

This is the very first step of water treatment. In this process large objects are removed from wastewater and then moved into the grit and sand removal tank, where they are further treated.

Primary Treatment:

After going through screening water is taken to primary treatment where all organic waste present in water is removed and this process is done by pouring the wastewater into a big tank where solid matthew style down at the base.

The settled solids, after primary treatment, are called the sludge. This sludge is decomposed by bacteria and the gas emitted by this decomposition  is known as biogas, which can be used as a fuel or can be used to generate electricity.

Secondary Treatment:

After primary treatment water is passed to an aeration tank where air is tapped into water to increase the growth of aerobic bacteria in the water. These bacteria break down small particles of sludge that are not broken during primary treatment. These broken slugs are known as activated sludge. These activated sludge contain air in them.

Final Treatment:

This activated sludge is passed through a bed of sand drying machine where the sludge is dried up  and from the water is filtered out. This water is filtered and then released into the river.

How to Control Water Pollution:

There are several way to prevent water pollution, some of them are below:

Industrial Wastewater Treatment:

As industrial waste is discharged into water bodies which causes contamination of water.

So by using pre-treatment plants for reducing harmful chemicals present in industrial waste, this process will decrease contamination of water.

Agriculture Wastewater Treatment:

By reducing use of pesticides and weedicides we can reduce underground water pollution. As these chemicals contaminantes water which causes various health related issues.

Municipal Wastewater Treatment:

Instead of discharging sewage waste directly into water bodies treat it in separate sewage treatment plants to reduce water pollution.

FAQs on Waste Water Story

1. Discuss Harmful Effects of Contaminants on Quality of Water?

Ans: These harmful contaminants reduce quality of water in various ways:

Loss of Aquatic Organisms: Aquatic organisms are harmed due to contaminated water. As discharges and runoff of harmful contaminants like pesticides  into waterways can be lethal to aquatic life, causing death of fishes, prawns, etc.

2. Explain Various Steps Should be Taken for Treatment of Polluted Water.

Ans: Some major steps towards treatment of wastewater are: 

As industrial waste is discharged into water bodies which causes contamination of water. 

Agriculture Wastewater Treatment:  

Water Recycling Essay

Introduction, the safety of drinking recycled water, risks associated with using reclaimed water, recycled water saves fresh potable water, reference list.

Recycled water is obtained from waste water and contaminated water that has been subjected to thorough treatment to ensure that it is proper for use for different purposes. A major benefit of recycled water is offering a sustainable and dependable source of water while decreasing demands on water provision that is brought about by the rising population (Hurlimann 2011).

To make sure that the rising population gets adequate water to satisfy all their requirements, there is a need for recycling of water and enlarging the application of reclaimed water. This paper seeks to determine if recycled water is safe for drinking.

• It is assessed to avoid risk for human health. If the right procedure is followed, recycling of water makes it safe for drinking (Mankad & Tapsuwan 2011). Regular checking and treatment is necessary to make sure that recycled water is suitable for human consumption. For instance, the designated regulatory bodies in every Australian state endorse water systems to guarantee its safety for the intended purpose. The regulatory bodies are typically the departments accountable for safety and environment. They evaluate the degree of danger to human beings and the surroundings to establish whether a water recycling plan should be endorsed.
• There is no instance where thoroughly recycled water caused illness. Reclaimed water has not brought about any disease anywhere across the globe. This has paved way for Australia as well as other countries to boost their dependence on recycled water (Burton et al. 2007).
• Current methods make recycled water safe for drinking. Contemporary water recycling practices have eradicated microbial organisms to a degree that they are harmless to humans. On this note, there is a high chance of applying recycled water for different purposes in addition to drinking. Currently, science is concentrating on boosting the effectiveness of water recycling practices through reduction of costs, as well as greenhouse gases (Pelusey & Pelusey 2006).
• Doubt. For a long time, it has been possible to convert sewage to safe, drinking water and this has acted as an excellent solution for water-scarce areas (Brown, Farrelly & Keath 2009). Nevertheless, this technology is not extensively applied, and even in some areas where it is applied, nobody in reality drinks the recycled water, not directly in any case. Many people still doubt the safety of recycled water for drinking.
• Psychological point of view. The psychological aspect is what makes people not directly drink recycled water, since people are hesitant to consume anything that they know has come from the toilet. Though recycled water may not be harmful, it may not auger well with people’s mindset after knowing that they have for once drunk it (Dolnicar & Hurlimann 2011). Even though recycling of water removes the contaminants, it is not able to detach its initial uniqueness as sewage.
• Recycled water is meant for non-potable functions. Reclaimed water is former sewage with contaminants removed and is employed for applications like irrigation. The aim of recycling is water conservation and not releasing recycled water for human consumption.
• Presence of pathogens. The description of recycled water as applied by Friedler and Hadari (2006) is the outcome of sewage reclamation that satisfies water value necessities for eco-friendly substance, suspended stuff, and pathogens. In other conventional application, recycled water denotes water that has not been highly purified with the purpose of providing a means of conserving potable water; this water is instead used for agriculture and other uses like laundry (Hurlimann & McKay 2007).
• Poor assessment standards. The states regulate recycled water and not the Environmental Protection Agency (EPA). Recent studies have proved that recycled water poses stern public health issues concerning pathogens in it that are not detected by the presently employed tests (Birks & Hills 2007). Moreover, the present tests fail to regard connections of heavy metals and pharmaceutics, which could promote the development of drug resistant microbes in recycled water obtained from sewage.
• Cost. The outlay on recycling water surpasses that of treating fresh water in different areas across the globe, where there is plenty of water (Kemp et al. 2012). Nevertheless, recycled water is normally distributed to people at a lower cost to persuade them to make use of it. Though, in most cases, recycled water is not used for drinking, it saves drinking water that could otherwise have been used for other purposes as little or no potable water will be employed for non-drinking purposes.
• Rich in nutrients. In most instances, recycled water is rich in nutrients like phosphorus and nitrogen that supports the growing crops in cases of its use in irrigation (Jarwal 2006). In this case, it turns out better and replaces drinking water that could otherwise have been used.

Breaking the characteristic of recycled water as water obtained from sewage and minimizing the difference between recycled water and fresh tap water may assist in the acceptance of recycled water even for potable purposes (Binnie, Kimber & Water 2009). Moreover, a different solution could be sending of properly tested recycled water into people’s taps for their use without initially informing them.

If people are then taught of its safety and it is proved to them through testing it, they may accept it without doubt. Nevertheless, recycled water must undergo thorough assessment and testing to make sure that it is suitable for drinking before it can be released for human consumption. To sum it up, whether recycled water is used for potable or non-potable purposes, its benefits cannot be underestimated (Upadhyaya & Moore 2012).

Binnie, C, Kimber, M & Water, A 2009, Basic water treatment , 4th edn, Thomas Telford, London. Web.

Birks, R & Hills, S 2007, ‘Characterisation of indicator organisms and pathogens in domestic greywater for recycling’, Environmental monitoring and assessment , vol. 129, no. 3, pp. 61-69. Web.

Brown, R, Farrelly, M & Keath, N 2009, ‘Practitioner perceptions of social and institutional barriers to advancing a diverse water source approach in Australia’, Water Resources Development , vol. 25, no. 1, pp. 15-28. Web.

Burton, F, Leverenz, H, Tsuchihashi, R & Tchobanoglous, G 2007, Water reuse: issues, technologies, and applications , McGraw-Hill, New York. Web.

Dolnicar, S & Hurlimann, A 2011, ‘Water alternatives—who and what influences public acceptance?’, Journal of Public Affairs , vol. 11, no. 1, pp. 49-59. Web.

Friedler, E & Hadari, M 2006, ‘Economic feasibility of on-site greywater reuse in multi-storey buildings’, Desalination , vol. 190 no. 1, pp. 221-234. Web.

Hurlimann, A 2011, ‘Household use of and satisfaction with alternative water sources in Victoria Australia’, Journal of environmental management , vol. 92 no. 10, pp. 2691-2697. Web.

Hurlimann, A & McKay, J 2007, ‘Urban Australians using recycled water for domestic non-potable use—An evaluation of the attributes price, saltiness, colour and odour using conjoint analysis’, Journal of Environmental Management , vol. 83 no. 1, pp. 93-104. Web.

Jarwal, S 2006, Using recycled water in horticulture: a grower’s guide , Dept of Primary Industries, Melbourne. Web.

Kemp, B, Randle, M, Hurlimann, A & Dolnicar, S 2012, ‘Community acceptance of recycled water: can we inoculate the public against scare campaigns?’, Journal of Public Affairs , vol. 12, no.4, pp. 337-346. Web.

Mankad, A & Tapsuwan, S 2011, ‘Review of socio-economic drivers of community acceptance and adoption of decentralised water systems’, Journal of Environmental Management , vol. 92, no. 3, pp. 380-391. Web.

Pelusey, M & Pelusey, J 2006, Recycled Water , Macmillan Education AU, South Yarra, Victoria. Web.

Upadhyaya, J. K & Moore, G 2012, ‘Sustainability indicators for wastewater reuse systems and their application to two small systems in rural Victoria, Australia’, Canadian Journal of Civil Engineering , vol. 39, no. 6, pp. 674-688. Web.

• Chicago (A-D)
• Chicago (N-B)

IvyPanda. (2023, November 1). Water Recycling. https://ivypanda.com/essays/water-recycling/

"Water Recycling." IvyPanda , 1 Nov. 2023, ivypanda.com/essays/water-recycling/.

IvyPanda . (2023) 'Water Recycling'. 1 November.

IvyPanda . 2023. "Water Recycling." November 1, 2023. https://ivypanda.com/essays/water-recycling/.

1. IvyPanda . "Water Recycling." November 1, 2023. https://ivypanda.com/essays/water-recycling/.

Bibliography

IvyPanda . "Water Recycling." November 1, 2023. https://ivypanda.com/essays/water-recycling/.

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Water Conservation Essay in English for Students

Water is among the most crucial resources on Earth. However, humans are misusing it alarmingly. This article has some water conservation essays for raising awareness.

October 19, 2023

Table of Contents

Water Conservation Essay: Water, essential for all life, is often overlooked as a finite resource. Water conservation is a shared responsibility to secure clean water for future generations. This blog covers the global water crisis, the importance of conservation, practical tips, successful projects, challenges, and the role individuals play.

Water Conservation Essay in English

Water represents one of life’s most fundamental elements, supporting the e500+ Words Essayxistence of all living organisms on Earth and serving as an indispensable resource for human survival. Despite the seeming abundance of water on our planet, the accessibility of clean, freshwater is a finite and restricted commodity. Thus, the preservation of water takes on paramount significance to guarantee that forthcoming generations can access this indispensable resource. In this article, we will explore the importance of water conservation and a variety of strategies to promote its prudent utilisation.

Water is an exhaustible resource, with Earth’s reserves of freshwater being limited. While approximately 70% of the Earth’s surface is enveloped in water, only a small portion of this constitutes freshwater, with a considerable fraction being locked away in glaciers and polar ice caps, rendering it inaccessible. The mounting global population and escalating water demands in agriculture, industry, and households have intensified concerns regarding the depletion of this valuable resource.

Among the most pressing concerns related to water conservation is the reckless and extravagant use of water in various parts of the world. Water wastage stems from issues like leaky faucets, continuously running toilets, and excessive irrigation practices. Addressing these issues necessitates the collaboration of individuals, communities, and governments to champion water conservation efforts.

Water conservation strategies are pivotal in securing the sustainability of our water supplies. The following are some effective approaches to conserve water:

• Leak Rectification: Regularly inspect and rectify leaking faucets, pipes, and toilets to curtail water wastage.
• Water-Efficient Appliances: Substituting outdated and inefficient appliances with water-efficient models like high-efficiency toilets, washing machines, and dishwashers, which consume significantly less water.
• Rainwater Collection: Accumulating and storing rainwater for domestic and gardening use to alleviate the demand on local water reservoirs.
• Xeriscaping: Opt for native and drought-resistant flora in landscaping to decrease the necessity for excessive watering.
• Responsible Irrigation: Employ efficient irrigation techniques, such as drip irrigation, and schedule lawn and garden watering during cooler times to reduce water evaporation.
• Curtail Shower and Bath Duration: Reducing shower and bath duration results in a considerable reduction in water consumption.
• Faucet Management: Turn off taps when brushing teeth or washing dishes and employ basins for collecting water for rinsing vegetables or cleaning.
• Educational Initiatives and Advocacy: Advocate for water conservation in your community and educate others about the importance of responsible water use.
• Governmental Measures: Governments should enact and enforce water conservation regulations and provide incentives for individuals and businesses to save water.
• Recycling and Reuse: Implement water recycling systems for industrial processes and utilise greywater for non-potable applications. Through the adoption of these practices, we can collectively wield a substantial influence on water conservation.

In summation, water conservation is not merely a choice; it is a necessity. The judicious and sustainable management of water is imperative to guarantee a continuous supply of clean and safe water for both the present and future generations. By implementing the aforementioned techniques for water conservation and fostering a culture of conscientious water use, we can collaborate to safeguard this invaluable resource and preserve the health of our planet.

Water Conservation Essay in 300 Words

Water conservation is a crucial endeavour in light of the finite nature of this life-sustaining resource. With the world’s population expanding and the demand for water rising across agriculture, industry, and households, responsible water use is imperative for future generations.

Minimising water wastage stands at the core of conservation efforts. Addressing issues like leaky faucets and pipes can result in significant savings. Moreover, the adoption of low-flow fixtures and appliances doesn’t compromise convenience while reducing consumption. Raising awareness and educational campaigns can promote these practices.

Efficient agricultural water management is pivotal. Techniques such as drip irrigation and precision farming minimise water wastage and enhance crop yields. Farmers can also embrace drought-resistant crops and rainwater harvesting for improved water efficiency.

Industries should prioritise water-saving technologies and recycling methods to reduce their water footprint. Government regulations and incentives can stimulate the adoption of sustainable water management practices.

Protecting natural water bodies like rivers, lakes, and wetlands is vital for ecosystem health. Pollution control and proper waste disposal are essential in safeguarding these sources. Preserving natural habitats plays a key role in maintaining water quality.

Community involvement is a potent driver of water conservation. Encouraging individuals to take responsibility for their water use and participate in local efforts can yield a significant impact on preservation.

In conclusion, water conservation is not a choice but a necessity. Responsible usage in homes, agriculture, and industry, combined with the safeguarding of natural water sources, ensures water’s availability for both current and future generations. This collective effort is indispensable for the survival of our planet.

Water Conservation Essay in 150 Words

Water stands as one of the most valuable resources on our planet, crucial for all life forms. Nevertheless, the availability of pure, freshwater is rapidly decreasing due to excessive use, contamination, and shifts in the climate. Hence, the preservation of water has emerged as a pressing global issue.

The act of conserving water is imperative to maintain ecosystems, support agriculture, and meet the rising needs of a continuously growing population. There exist several uncomplicated yet efficient methods to contribute to water conservation. Firstly, repairing leaks in pipelines and faucets can result in the preservation of numerous gallons of water annually. Secondly, employing low-flow fixtures and appliances aids in curtailing water consumption. Thirdly, cultivating mindfulness regarding water usage in daily routines, such as taking shorter showers and turning off the tap when not in use, can have a substantial impact.

In the realm of agriculture, implementing water-efficient techniques like drip irrigation can serve to conserve water. Industries have the potential to adopt recycling and wastewater treatment approaches to diminish water wastage.

Ultimately, it’s our collective responsibility to conserve water, as it ensures a sustainable future for ourselves and the generations to come. Water conservation is not just a choice; it’s a necessity.

Water Conservation and Management Essay

Water is Earth’s most precious resource, essential for all life, yet often overlooked. With a growing global population and escalating climate change, effective water conservation and management are critical. This essay discusses their importance, challenges, and strategies.

• Scarce Resource: Freshwater is limited and under threat from pollution and overuse.
• Ecosystems: Healthy aquatic systems maintain biodiversity and ecological balance.
• Human Survival: Clean water is a fundamental human right.
• Agriculture: Efficient water management in agriculture ensures food security.
• Economic Stability: Water is integral to many industries.
• Overuse and Wastage: Excessive consumption and wastage deplete resources.
• Pollution: Chemicals, sewage, and industrial pollutants harm water sources.
• Climate Change: Altered precipitation patterns make water management unpredictable.
• Population Growth: Growing population strains resources.
• Infrastructure: Many lack proper water infrastructure.
• Education: Raise awareness about water conservation.
• Technology: Develop water-saving solutions.
• Infrastructure: Invest in water management infrastructure.
• Legislation: Enforce water conservation and pollution control laws.
• Ecosystems: Protect and restore natural habitats.
• Recycling: Reuse treated wastewater.
• Desalination: Sustainably harness desalination where needed.

In conclusion, water conservation and management are vital for our planet’s future, requiring education, technology, and responsible governance to address challenges and secure this invaluable resource. Act now to protect water for all.

Short Essay on Water Conservation

Water is an indispensable resource for life on Earth, but its supply is limited, necessitating urgent conservation. With global population growth, climate change, and increasing water demands in agriculture, industry, and households, preserving this resource is paramount.

Agriculture consumes about 70% of freshwater, making efficient irrigation methods and drought-resistant crops essential for conservation. Industries can reduce water usage through advanced recycling and treatment. At home, fixing leaks, using low-flow fixtures, and practising water-conscious habits make a big difference.

Government policies play a vital role through legislation, efficiency standards, and public awareness campaigns.

Water conservation is also tied to environmental preservation, as it prevents ecosystem disruption and reduces energy consumption and greenhouse gas emissions.

In conclusion, water conservation is a global imperative. It’s not just the responsibility of governments and industries but a shared duty of every individual. By acting now, we secure a sustainable future with abundant freshwater for generations to come.

Water Conservation Essay FAQs

Yes, many regions have regulations for water conservation, such as drought restrictions and efficient fixture requirements.

It ensures long-term water availability, essential for economic, social, and environmental sustainability.

Xeriscaping conserves water, lowers maintenance, and enhances aesthetics.

Yes, smart metres and data analytics enhance monitoring and efficiency in water conservation.

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Water Waste Management (Essay Sample)

Water is one of the most essential needs for a person to have a sustainable life. All creatures need water to progress and produce. Without it no one will exist, because our planet consists of mostly water therefore water gives us life. To have a sufficient supply of water we have to conserve. This is not an easy task especially in today’s era. Everything is commercialized and modernized to the point wherein natural conservation has been set aside. Increase in population is also one of the main reasons why water conservation becomes hard. As the number of people grows, the water becomes more polluted.

This is where water waste management comes in, it is the process of recycling water to be used again in a water system or to be disposed in an environmentally-conscious manner. The major problem in the modernized world is that every now and then infrastructures arise which makes it harder to recycle water because the sewage system becomes small. Sewage treatment is one of the major fields in water waste management. All that comes from your toilet, be it showers, baths, sinks etc. is directly generated into sewage systems. The wastewater that comes from industrial facilities is dangerous because it carries harmful pollutants that and if not handled with care, these pollutants turn into toxins that will cause illness or even death for millions of people on a global scale.

Another problem in the modern management is the small capacity of sewage system. Other cities also tend to direct the rain water into the sewage system that causes overflow in it. If the overflow happens, all the contaminants in the sewage will be spread in all parts of the city which is very harmful to the people. Sewage systems consist of pipes and pumps and have three stages of filtration. The first stage is separating solid waste from the water. Second stage is treating the water and removing microorganisms. Third stage is the process called microfiltration. In this stage the water is being treated and chemical additives are added into the water which eventually treats the liquid and transforms them into drinkable or usable water for our daily use.

Recycling water is no easy task; it takes a lot of time, effort, and investment in doing so. Wasted water will affect so many people’s lives. Dirty water is as harmful as poison when consumed by a person. We can aid in recycling water by researching on how to do simple filtration set-ups, conserve water when not in use, and properly segregate and dispose of garbage so as to not provide toxins in water.

There are two types of wastewater that we can recycle on our own. First is the black water that comes from our toilet. If you want to have your own sewage system, this black water can be regulated in a leach field. Second is the grey water, which comes from our sink. Grey water can be used in watering the plants, washing the tires of your car or even washing your garage. This type of waste water can be used in other chores but is not potable.

In doing your own waste water management at you home you can help the environment be clean. It will also lessen the work of sewage systems and it will save the world a lot of water. In order to live a happy and healthy life we should all take charge of our own cleanliness. Let us not take for granted the small things that will make our lives easier and for future generations who will inevitably use them.

Water Policy in Pakistan pp 323–349 Cite as

Wastewater Treatment in Pakistan: Issues, Challenges and Solutions

• Fozia Parveen 7 &
• Sher Jamal Khan 8  
• First Online: 27 September 2023

165 Accesses

1 Citations

Part of the book series: Global Issues in Water Policy ((GLOB,volume 30))

Currently able to treat only 1% of its wastewater, Pakistan is far from its commitment under the sustainable development goals (SDGs) to treat up to 50% of its wastewater. The rapid urbanization of cities without corresponding improvements in infrastructure to collect and treat wastewater leads to poor quality water and sanitation. The organizations responsible for wastewater treatment are also responsible for providing quality drinking water, i.e., WASA (Water and Sanitation Authorities). This has resulted in untreated wastewater being used for irrigation, and heavy contamination of ground and surface drinking water, thus leading to disease. Decentralized wastewater treatment plants and nature based systems need to be introduced to both cities and villages so that water can be reused in a healthy and sustainable way. Industries are now beginning to adhere to compliance standards while cities are becoming aware that open drains are not a long term solution to this problem. In short, Pakistan needs to consider the long-term benefits of wastewater treatment instead of its short-term costs, and make it a priority.

• Rapid urbanization
• Water and sanitation
• Compliance standards
• Decentralized wastewater treatment
• Membrane bioreactor plants in Pakistan

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Ahmadi, L. (2012). Planning and management modeling for treated wastewater usage . Utah State University. https://core.ac.uk/download/pdf/32541096.pdf

Ahmed, Z., Cho, J., Lim, B.-R., Song, K.-G., & Ahn, K.-H. (2007). Effects of sludge retention time on membrane fouling and microbial community structure in a membrane bio-reactor. Journal of Membrane Science, 287 (2), 211–218.

Article   CAS   Google Scholar  

Ahmed, T., Imdad, S., & Butt, N. M. (2015). Bacteriological assessment of drinking water of Islamabad capital territory, Pakistan. Desalination and Water Treatment, 56 (9), 2316–2322.

Alamgir, A., Khan, M. A., Hany, O. E., Shahid, S. S., Mehmood, K., Ahmed, A., Ali, S., Riaz, K., Abidi, H., Ahmed, S., & Ghori, M. (2015). Public health quality of drinking water supply in Orangi town, Karachi, Pakistan. Bulletin of Environment, Pharmacology and Life Sciences, 4 , 88–94.

Google Scholar  

Ali, H., & Akhtar, M. S. (2015). People’s perception about poor quality of drinking water and its impact on human health in rural areas of tehsil Samundri Pakistan. International Journal of Science and Research, 4 , 523–528.

Asghar, M. Z., Arshad, A., Hong, L., Riaz, M., & Arfan, M. (2018). Comparative assessment of physico-chemical parameters of waste water effluents from different industries in Lahore, Pakistan. Proceedings of the International Academy of Ecological and Environmental Science, 8 (2), 99–112.

CAS   Google Scholar  

Barinova, S., Khuram, I., Asadullah, A., Jan, S., et al. (2016). How water quality in the Kabul River, Pakistan, can be determined with algal bio-indication. Advanced Studies in Biology, 8 (4), 151–171.

Article   Google Scholar  

Bermúdez, S. (2021). How can voluntary sustainability standards drive sustainability in public procurement and trade policy? https://www.iisd.org/articles/sustainability-standards-public-procurement-trade-policy

Bura, R., Cheung, M., Liao, B., Finlayson, J., Lee, B., Droppo, I., Leppard, G., & Liss, S. (1998). Composition of extracellular polymeric substances in the activated sludge floc matrix. Water Science and Technology, 37 (4–5), 325.

Butt, M., & Khair, S. M. (2014). Cost of illness of water-borne diseases: A case study of Quetta. Journal of Applied and Emerging Sciences, 5 (2), 133–143.

Chuang, S.-H., Lin, P.-K., & Chang, W.-C. (2011). Dynamic fouling behaviors of submerged nonwoven bioreactor for filtration of activated sludge with different SRT. Bioresource Technology, 102 (17), 7768–7776.

Article   CAS   PubMed   Google Scholar  

Daud, M. K., Nafees, M., Ali, S., Rizwan, M., Bajwa, R. A., Shakoor, M. B., Arshad, M. U., Chatha, S. A. S., Deeba, F., Murad, W., Malook, I., & Zhu, S. J. (2017). Drinking water quality status and contamination in Pakistan. BioMed Research International, 2017 , 7908183. https://doi.org/10.1155/2017/7908183

Article   CAS   PubMed   PubMed Central   Google Scholar  

Government of Pakistan. (2010). Pakistan economic survey 2009–2010 . Ministry of Finance, Economic Advisor Wing, Islamabad.

Hasar, H. (2009). Simultaneous removal of organic matter and nitrogen compounds by combining a membrane bioreactor and a membrane biofilm reactor. Bioresource Technology, 100 , 2699–2705.

Haydar, S., Arshad, M., & Aziz, J. (2009). Evaluation of drinking water quality in urban areas of Pakistan: A case study of southern Lahore. Pakistan Journal of Engineering and Applied Sciences, 5 , 16–23.

Henze, M., van Loosdrecht, M. C. M., Ekama, G. A., & Brdjanovic, D. (2008). Biological wastewater treatment: Principles, modelling and design . IWA Publishing.

Book   Google Scholar  

Hisam, A., Rahman, M. U., Kadir, E., Tariq, N. A., & Masood, S. (2014). Microbiological contamination in water filtration plants in Islamabad. Journal of the College of Physicians and Surgeons Pakistan, 24 , 345–350.

PubMed   Google Scholar  

Hussain, I., Raschid, L., Hanjra, M. A., Marikar, F., & van der Hoek, W. (2002). Wastewater use in agriculture: Review of impacts and methodological issues in valuing impacts . International Water Management Institute (IWMI). (IWMI Working Paper 037). https://doi.org/10.3910/2009.172

Hussain, S. A., Hussain, A., Fatima, U., Ali, W., Hussain, A., & Hussain, N. (2016). Evaluation of drinking water quality in urban areas of Pakistan: A case study of Gulshan-e-Iqbal Karachi. Journal of Biological and Environmental Sciences, 8 , 64–76.

Imran, S., Bukhari, L. N., & Gul, S. (2018). Water quality assessment report along the banks of river Kabul Khyber Pakhtunkhwa 2018. In Pakistan Council of Research in water resources (Vol. 45).

Iqbal, M. S., & Hofstra, N. (2019). Modeling Escherichia coli fate and transport in the Kabul River basin using SWAT. Human and Ecological Risk Assessment: An International Journal, 25 (5), 1279–1297.

IUCN (International Union for Conservation of Nature). (1994). Pollution and the Kabul River: An analysis and action plan (pp. 30–54). Environmental Planning and Development Department, NWFP, Pakistan.

Jiménez, B., Drechsel, P., Koné, D., Bahri, A., Raschid-Sally, L., & Qadir, M. (2010). Wastewater, sludge, and excreta use in developing countries: An overview. In P. Drechsel, C. A. Scott, L. Raschidsally, M. Redwood, & A. Bahri (Eds.), Wastewater irrigation and health: Assessing and mitigating risk in low-income countries (pp. 1–17). Earthscan.

Jinsong, Z., Chuan, C. H., Jiti, Z., & Fane, A. (2006). Effect of sludge retention time on membrane biofouling intensity in a submerged membrane bioreactor. Separation Science and Technology, 41 (7), 1313–1329.

Karns, L. J. (1977). Control of pollution of Kabul River and the needed legislation . UNIDO/UNDP Report.

Khan, S. J., Hasnain, G., Fareed, H., & Aim, R. B. (2019). Evaluation of treatment performance of a full-scale membrane bioreactor (MBR) plant from unsteady to steady state condition. Journal of Water Process Engineering, 30 , 100379.

Khattak, M. S., Anwar, F., Saeed, T. U., Sharif, M., Sheraz, K., & Ahmed, A. (2016). Floodplain mapping using HEC-RAS and ArcGIS: A case study of Kabul River. Arabian Journal for Science and Engineering, 41 , 1375–1390.

Khuram, I., Ahmad, N., Jan, S., & Barinova, S. (2014). Freshwater green algal biofouling of boats in the Kabul River, Pakistan. Oceanological and Hydrobiological Studies, 43 (4), 329–336.

Liang, Z., Das, A., Breeman, D., & Hu, Z. (2010). Biomass characteristics of two submerged membrane bioreactors for nitrogen removal from wastewater. Water Research, 44 , 3313–3320.

Lim, J., Do, S. G., & Hwang, S. (2007). Primer and probe sets for group-specific quantification of the genera Nitrosomonas and Nitrosospira using real time PCR. Biotechnology and Bioengineering, 99 (6), 1374–1383.

Mahfooz, Y., Yasar, A., Guijian, L., Ul Islam, Q., Akhtar, A. B. T., Rasheed, R., Irshad, S., & Naeem, U. (2020). Critical risk analysis of metals toxicity in wastewater irrigated soil and crops: A study of a semi-arid developing region. Scientific Reports, 10 , 12845. https://doi.org/10.1038/s41598-020-69815-0

Article   ADS   CAS   PubMed   PubMed Central   Google Scholar  

Mashiatullah, A., Chaudhary, M. Z., Khan, M. S., Javed, T., & Qureshi, R. M. (2010). Coliform bacterial pollution in Rawal Lake, Islamabad and its feeding streams/river. Nucleus, 47 , 35–40.

Metcalf & Eddy. (2003). Wastewater engineering: Treatment and reuse (4th ed.). McGraw-Hill.

Nasir, M. S., Nasir, A., Rashid, H., & Shah, S. H. H. (2017). Spatial variability and long-term analysis of groundwater quality of Faisalabad industrial zone. Applied Water Science, 7 , 3197–3205. https://doi.org/10.1007/s13201-016-0467-3

Article   ADS   Google Scholar  

Pollice, A., Laera, G., Saturno, D., & Giordano, C. (2008). Effects of sludge retention time on the performance of a membrane bioreactor treating municipal sewage. Journal of Membrane Science, 317 (1–2), 65–70.

Qadir, M., Wichelns, D., Raschid-Sally, L., Minhas, P. S., Drechsel, P., Bahri, A., Mccornick, P. G., Abaidoo, R., Attia, F., & Elguindy, S. (2007). Agricultural use of marginal-quality water: Opportunities and challenges. In D. Moden (Ed.), Water for food, water for life. A comprehensive assessment of water management in agriculture . Earthscan, London and International Water Management Institute.

Ramothokang, T. R., Drysdale, G. D., & Bux, F. (2003). Isolation and cultivation of filamentous bacteria implicated in activated sludge bulking. Water SA, 29 (4), 405–410.

Shah, J., Sher, M., Abbas, S., & Sulaiman, M. (2019). Pollution status of river Kabul near Peshawar City. Specialty Journal of Geographical and Environmental Science, 3 (1), 1–4.

Shoaib, M., Asad, M. J., Aziz, S., Usman, M., Rehman, A., Zafar, M. M., & Ilyas, M. (2016). Prevalence of pathogenic microorganisms in drinking water of Rawalpindi and Islamabad. World Journal of Fish and Marine Sciences, 8 , 14–20.

Sun, O. H., Chung, S. H., Nasir, J. A., & Saba, N. U. (2001). Drinking water quality monitoring in Islamabad . National Institute of Health & Korea International Cooperation Agency.

Van der Hoek, W., Hassan, M. U., Ensink, J. H., Feenstra, S., Raschid-Sally, L., Munir, S., Aslam, R., Ali, N., Hussain, R., & Matsuno, Y. (2002). Urban wastewater: A valuable resource for agriculture: A case study from Haroonabad, Pakistan (Vol. 63). IWMI.

WHO. (2006a). Guidelines for the safe use of wastewater, excreta and greywater . World Health Organization-Volume 1.

WHO. (2006b). Guidelines for the safe use of wastewater excreta and greywater, volume 2: Wastewater use in agriculture . World Health Organisation.

Wichelns, D., & Qadir, M. (2015). Achieving sustainable irrigation requires effective management of salts, soil salinity, and shallow groundwater. Agricultural Water Management, 157 , 31–38.

Williams, M. D., & Pirbazari, M. (2007). Membrane bioreactor process for removing biodegradable organic matter from water. Water Research, 41 (17), 3880–3893.

Zahoorullah, T. A. (2003). Quality of drinking water in rural Peshawar, Pakistan. Journal of Medical Research, 42 , 85–89.

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Parveen, F., Khan, S.J. (2023). Wastewater Treatment in Pakistan: Issues, Challenges and Solutions. In: Ahmad, M. (eds) Water Policy in Pakistan. Global Issues in Water Policy, vol 30. Springer, Cham. https://doi.org/10.1007/978-3-031-36131-9_12

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