Organisation which carries out monitoring programs, and the testing of physical and chemical properties of water.

EPA's information resources on clean lakes, including links to on-line documents, the latest [1994] published 305(b) report, and ordering instructions for other documents about clean lakes.

Applying ecological principles and natural systems to create water and waste solutions for households, communities, agriculture, landfills and industry.

Goal is to provide unbiased earth science information on the behavior of toxic substances in U.S. hydrologic environments.

Information concerning the impact of phosphates on aquatic systems and the environment, the properties and performance of polyphosphate products, and measures to reduce phosphate discharges.

Bibliography of reports about water quality in the U.S., sorted by geographic area.

7th graders Dave and Adnan built with website providing information on water testing, pullutants, and watersheds.

Assessment of trace elements in ground water, surface water, streambed sediment, and fish and clam tissue across the United States.

2003 water quality consumer confidence report describing water contaminant levels and sources responsible.

Computer application being developed to help water managers to evaluate the effect of large nutrient loads on stream nutrient retention, by analyzing relationships between stream nutrient retention and several physical, chemical and biological parameters. Overview, participants, sample study sites in the Mediterranean region, and publications.