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Polluted Runoff: Nonpoint Source (NPS) Pollution

Types of Nonpoint Source Pollution

Nonpoint source (NPS) areas of focus are driven by particular land uses. Under Section 319 of the Clean Water Act, states, territories and tribes must identify categories of sources of NPS pollution as part of an assessment report required for obtaining a grant. The links below provide information on these source categories, and on practices to reduce the impacts of NPS pollution in each of those categories. 
land cover image of the contiguous United StatesDifferent types of land use will influence what types of  Nonpoint Source water quality concerns affect a given waterbody.  Image Courtesy of the Multi-Resolution Land Characteristics ConsortiumExit