Students, through a case study of actual water sources in Washington State, identify major sources of aquatic pollution. They also categorize pollutants, make inferences about the effects of pollutants on the environment and construct...

This site has a user guided story about a bog that has been a secret dumping ground for waste.

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.