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Non-Point Source Pollution
NPS
pollution comes from many diffuse sources. It is caused by rainfall or snowmelt
moving over and through the ground. Runoff after rain events pick up and carry
away natural and human-made pollutants, finally depositing them into lakes,
rivers, wetlands, coastal waters, and even our underground sources of drinking
water. NPS pollution remains the largest source of pollution of water bodies
the United States. (EPA, 1997)
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