US Geological Survey
Usgs: Water Science for Schools Effects of Urbanization
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.
Other
Holistic Med: Palladium
Describes some negative results from exposure to palladium metal. Well referenced.
CK-12 Foundation
Ck 12: Earth Science: Impacts of Hazardous Waste
[Free Registration/Login may be required to access all resource tools.] Discusses the impacts of hazardous waste on the environment and human health, and the provisions of the Superfund Act.