Philomath High School senior class project that monitors water quality of swimming holes. Includes photos of the sites and water quality results.

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

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

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

Magazine offering editorial content on developments in water conditioning, filtration and disinfection for residential, commercial and industrial systems. Lists forcoming trade shows, product and careers database, articles, newsletter, subscriptions based in the USA.

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