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Landfill leachate is characterized by high organic and inorganic  pollutant concentrations  and is extremely toxic to the environment . The significant impacts of landfill leachate could be eutrophication of aquatic systems and toxic effects on fauna which are caused by a variety of contaminants  .

https://www.sciencedirect.com/topics/earth-and-planetary-sciences/landfill-leachate

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Sewer water carried chemicals and harmful bacteria which pose serious health issues. Sewers from houses carry pathogens which cause diseases. Sewage carry microorganisms which carry deadly diseases and are also breeding ground for disease carriers

https://www.sciencedirect.com/topics/earth-and-planetary-sciences/sewage …

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https://www.sciencedaily.com/terms/agriculture.htm …

Agricultural processes such as uncontrolled spreading of slurries and manure, disposal of sheep dip, tillage, ploughing of the land, use of pesticides and fertilisers can cause water pollution .  Accidental spills from milk dairies can also affect the quality of water

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https://www.water-pollution.org.uk/marine-dumping/ …

Every household produces garbage. It can be in the form of papers, plastic bottles, glass, rubber, aluminium and also waste food.  This garbage is sometimes dumped in water bodies, and this causes water pollution. Some of these waste deposits take up to 200 years to decompose.  When they enter the sea, not only do they cause pollution to the water but also harm to water creatures.

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Oil  waste from industries, ships, and machinery sometimes gains access to water bodies along with other waste products. Oil is not soluble with water and thus causes a layer that covers the water underneath.  Besides polluting the water and making it harmful to humans, it also causes death to marine wildlife

https://www.noaa.gov/education/resource-collections/ocean-coasts/oil-spills …

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 Landfill leachate is characterized by high organic and inorganic  pollutant concentrations  and is extremely toxic to the environment . The significant impacts of landfill leachate could be eutrophication of aquatic systems and toxic effects on fauna which are caused by a variety of contaminants  .  

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