What is non-point source pollution?
Non-point source pollution (NPS) is water pollution that is difficult to trace to a specific discharge point. Because it comes from many diverse sources, it is hard to control. Examples of common nonpoint source pollutants include fertilizers, pesticides, sediments, oils, salts, trace metals and litter. They come from farms, yards, roofs, construction sites, businesses, automobiles and streets. Nonpoint source pollution can be contrasted with point source pollution, where discharges occur to a body of water at a single location, such as discharges from a chemical factory, urban runoff from a roadway storm drain or from ships at sea.

Show All Answers

1. What is stormwater runoff?
2. Why are the stormwater and sanitary systems separate?
3. What is non-point source pollution?
4. What can residents do to help improve stormwater quality?
5. What is impervious surface?
6. What is a MS4?
7. What is an illicit discharge?