An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Nonpoint Source Pollution with Nitrogen and Phosphorus

The Ecological Society of America (ESA), the nation's leading professional society of ecological scientists, is an essential source of information for those addressing the many complex tasks associated with watershed management. Since 1997, Issues in Ecology, has been an especially useful resource for citizens, resource managers, policymakers, and others designing and implementing watershed approaches to environmental management. Each Issues in Ecology paper is designed to report, in language understandable by non-scientists, the consensus of a panel of scientific experts on issues relevant to the environment.

Number 3 (Summer 1998): Nonpoint Pollution of Surface Waters with Phosphorus and Nitrogen

  • PDF version Exit
  • Abstract

A full suite of Issues in Ecology is available on the ESA website.

You can also learn more on the basics of nutrient pollution (the problem, sources and solutions, effects, etc.) on EPA’s Nutrient Pollution website.