NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters, and even our underground sources of drinking water. The effects of nonpoint source pollutants on specific waters vary and may not always be fully assessed. However, we know that these pollutants have harmful effects on drinking water supplies, recreation, fisheries, and wildlife. Start with factsheets and FAQs to learn more about NPS and find out about prevention methods you can use in your community or household.
Separate sections are devoted to information for students, teachers and kids.
Numerous additional on-line publications are accessible through this site, as well as detailed information on Section 319 of the Clean Water Act pertaining to the Nonpoint Source Management Program. Under this section, State, Territories, and Indian Tribes receive grant money which support a wide variety of activities including technical assistance, financial assistance, education, training, technology transfer, demonstration projects, and monitoring to assess the success of specific nonpoint source implementation projects. This document was produced by the collective experience, skills, and technology of 15 Federal agencies of the United States government as a common technical reference on stream corridor restoration. It is a benchmark document that is being used by these agencies, as well as many others who are interested in restoring the functions and values of the nation's stream corridors. Find a full copy of this handbook to view or download.