This U.S. Geological Survey website offers a short article then lists topics that are linked to brief articles that describe that particular topic's effect on water quality in urban areas. Click Home to access the site in Spanish.

EPA site offers answers to what nonpoint source pollution is as well as provides links and information as to what concerned citizens can do about it.

This US Geological Survey site briefly discusses the basics of why pesticides are increasingly found in our ground water. Click Home to access the site in Spanish.

Illustrated tutorial explains nonpoint source pollution and its role in the health of the environment. Students learn about different sources of pollution and how these pollutants contaminate the land, air, and water. Click on the links...

At this site from the U.S. Geological Survey you can find out what makes rain such a valuable resource. Included is a chart that tells how much rain different cities in the United States receive. Click Home to access the site in Spanish.