nutrient pollution

Nutrient pollution is a form of water pollution caused by too many nutrients entering the water. It is a primary cause of eutrophication of surface waters, in which excess nutrients, usually nitrogen or phosphorus, stimulate algal growth. Sources of nutrient pollution include surface runoff from farms, waste from septic tanks, feedlots, and emissions from burning fuels. Raw sewage, which is rich in nutrients, is also a contributing factor when dumped in water bodies. Excess nitrogen causes envir