Wiktionary
n. contamination of water, especially surface water, by sewage effluent, fertilizer runoff, industrial chemical discharge etc.
WordNet
n. pollution of the water in rivers and lakes
Wikipedia
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
Water pollution affects the entire biosphere – plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and population, but also to the natural biological communities.
Usage examples of "water pollution".
He had read off a list of books dealing with air pollution and water pollution that Bradley had given him.
Today, with spreading alarm over air pollution, water pollution, urban crowding and other such factors, more and more health authorities are coming around to the ecological notion that the individual needs to be seen as part of a total system, and that his health is dependent upon many subtle external factors.
Lapis lazuli is good for healing both air and water pollution and for world peace.
Air and water pollution were at their lowest levels in decades, crime was at a record low, teen pregnancies had dropped out of sight, and more kids were graduating from high school and college than ever before.
Acid rain, pesticides, water pollution, air pollution, global warming, too many ultraviolet rays caused by the hole in the ozone layer.
The use of pesticides and fertilizers leads to water pollution and air pollution.
He was in Boston at a New England Environmental Commission meeting on water pollution.