![]() ![]() Each year, millions of dollars are spent to restore and protect areas damaged or endangered by nonpoint source pollutants. More than one-third of the shellfish-growing waters of the United States are adversely affected by coastal pollution.Ĭorrecting the harmful effects of nonpoint source pollution is costly. In some areas, this pollution is so bad that it causes beaches to be closed after rainstorms. Nonpoint source pollution can make river and ocean water unsafe for humans and wildlife. Top soil or silt from fields or construction sites can run off into waterways, harming fish and wildlife habitats. Some water pollution actually starts as air pollution, which settles into waterways and oceans. Much of this, too, makes its way to the sea. Millions of motor vehicle engines drop small amounts of oil each day onto roads and parking lots. Nonpoint source pollution includes many small sources, like septic tanks, cars, trucks, and boats, plus larger sources, such as farms, ranches, and forest areas. One of the biggest sources is called nonpoint source pollution, which occurs as a result of runoff. Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides.Įighty percent of pollution to the marine environment comes from the land. When large tracts of land are plowed, the exposed soil can erode during rainstorms. ![]()
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