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  2. Water pollution - Wikipedia

    en.wikipedia.org/wiki/Water_pollution

    A practical definition of water pollution is: "Water pollution is the addition of substances or energy forms that directly or indirectly alter the nature of the water body in such a manner that negatively affects its legitimate uses." [1]: 6 Water is typically referred to as polluted when it is impaired by anthropogenic contaminants.

  3. Water scarcity - Wikipedia

    en.wikipedia.org/wiki/Water_scarcity

    Water pollution (or aquatic pollution) is the contamination of water bodies, with a negative impact on their uses. [81]: 6 It is usually a result of human activities. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water pollution results when contaminants mix with these water bodies. Contaminants can come from ...

  4. Water issues in developing countries - Wikipedia

    en.wikipedia.org/wiki/Water_issues_in_developing...

    Water pollution also reduces the ecosystem services such as drinking water provided by the water resource. Sources of water pollution are either point sources or non-point sources. [33] Point sources have one identifiable cause, such as a storm drain, a wastewater treatment plant, or an oil spill. Non-point sources are more diffuse.

  5. Environmental science - Wikipedia

    en.wikipedia.org/wiki/Environmental_science

    Environmental science is an interdisciplinary academic field that integrates physics, biology, meteorology, mathematics and geography (including ecology, chemistry, plant science, zoology, mineralogy, oceanography, limnology, soil science, geology and physical geography, and atmospheric science) to the study of the environment, and the solution of environmental problems.

  6. Water pollution in the United States - Wikipedia

    en.wikipedia.org/wiki/Water_pollution_in_the...

    Topsoil runoff from farm, central Iowa (2011). Water pollution in the United States is a growing problem that became critical in the 19th century with the development of mechanized agriculture, mining, and manufacturing industries—although laws and regulations introduced in the late 20th century have improved water quality in many water bodies. [1]

  7. Eutrophication - Wikipedia

    en.wikipedia.org/wiki/Eutrophication

    Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation. [ 4 ] Approaches for prevention and reversal of eutrophication include minimizing point source pollution from sewage and agriculture as well as other nonpoint ...

  8. Indian water policy - Wikipedia

    en.wikipedia.org/wiki/Indian_water_policy

    The first National Water Policy was adopted in September, 1987. [1] It was reviewed and updated in 2002 and later in 2012. India accounts for 18% of the world population and about 4% of the world’s water resources. One of the solutions to solve the country’s water woes is to create Indian Rivers Inter-link.c [2]

  9. Pollution - Wikipedia

    en.wikipedia.org/wiki/Pollution

    Various definitions of pollution exist, which may or may not recognize certain types, such as noise pollution or greenhouse gases.The United States Environmental Protection Administration defines pollution as "Any substances in water, soil, or air that degrade the natural quality of the environment, offend the senses of sight, taste, or smell, or cause a health hazard.