Phosphates and dissolved oxygen

Phosphate is contained in many natural waters such as lakes and streams. Phosphate is essential for the growth of aquatic plants, but excessive phosphate causes algae growth and algae breeding. If there are too many algae, the amount of dissolved oxygen in water may decrease. Phosphorus is influenced in various ways in water Phosphoric acid usually exists as phosphate in natural water (Mcwelsh and Raintree, 1998). Phosphoric fertilizer is contained in fertilizer and laundry detergent and may enter water from agricultural drainage, industrial waste, sewage drainage (Outwater, 1996).

In the western part of the United States, many streams and riparian habitats are affected by livestock grazing. This leads to phosphate, nitrate, dissolved oxygen, increased temperature, increased turbidity and eutrophication phenomena, and a decrease in species diversity. Livestock management options for riparian protection include salt and mineral arrangement, seasonal access restrictions, use of alternative water sources, supply of "hardened" streams, grazing and fencing. In the eastern United States, waste disposal from farms has also been shown to cause extensive eutrophication of the Mississippi River and the waters including the Atlantic Ocean (Palmquist et al., 1997). But in North Carolina there is evidence that Palmquist's research has been completed so measures have been taken to reduce the risk of accidental spillage from the fecal lagoon and that the US pig production environment management has improved

Risks related to pollution problems are serious. Pollutants increase the amount of Escherichia coli and dissolved phosphate and nitrate. And it also reduces the amount of dissolved oxygen in the water. The stream of Bevern discharges water to Sussex River Ouse and its tributaries are at risk of being contaminated by several sewage treatment facilities that release sewage into these streams. Therefore, according to the regulations of the Sussex River Protection Association and other associations, the Sussex River is still threatened by contamination of these very low standard processing plants.