Water pollution or H2O pollution has many sources and characteristics. Humans and other organisms produce bodily wastes which enter rivers, lakes, oceans and other surface waters; in high concentrations these wastes result in bacterial contamination and excessive nutrient loading (eutrophication). Industries discharge a variety of compounds such as heavy metals, and wastewater, sometimes in toxic concentrations, from industrial processes that may also be too hot or too low in dissolved oxygen to support life. Silt-bearing runoff from ...

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• Water pollution - Causes
• Water pollution - Contaminants
• Water pollution - Consequences

Read more here: » Water pollution: Encyclopedia - Water pollution

The causes of water pollution can be divided into two groups: anthropogenic sources of pollution are those due to human choices, and natural sources are those resulting from forces intrinsic to the environment. Anthropogenic sources include: discharge of poorly-treated or untreated sewage; runoff from construction sites, farms, or paved and other impervious surfaces e.g. silt discharge of contaminated and/or heated water used for industrial processes acid rain caused by industrial discharge of s ...

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Water pollution, Water pollution - Causes, Water pollution - Contaminants, Water pollution - Consequences

Read more here: » Water pollution: Encyclopedia II - Water pollution - Causes

Contaminants may include organic and inorganic substances. Some organic water pollutants include: bacteria, often is from sewage or livestock operations; fertilizers, in runoff from agricultural fields or forestry; food processing waste; tree and brush debris from logging operations Inorganic pollutants include: metals acid mine drainage acid rain caused by industrial or volcanic discharges acid pollution of lakes by runoff from acid soils ...

See also:

Water pollution, Water pollution - Causes, Water pollution - Contaminants, Water pollution - Consequences

Read more here: » Water pollution: Encyclopedia II - Water pollution - Contaminants