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.

Critical source of freshwater and most abundant, yet also the most polluted is groundwater. Discover how scientists work to purify this important resource to make it useable.

Provides information on what to do after a flood to protect well water from contamination, the testing of private well water, and protecting private well water.

This site defines and describes causes of ocean pollution. Easily navigated links to education, research, and current issues on pollution.

This site, from an archived Smithsonian exhibit, describes and illustrates the effects of toxic materials on wildlife in bodies of water.

Excellent site covers all types of water pollution. Hundreds of links including books, articles, organizations, specific topics.

Provides information about water quality, contamination in private wells, well construction and pump installation for private wells, a list of laboratories certified to test for bacteria and other contaminants, recommendations for...

This site from the National Ground Water Association provides information on ground water, the use of ground water, private water system, well maintenance, and protecting your own well water supply.