Toxic Substances Hydrology Program
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Frequently Asked Questions
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Q: Where can I find information on water-quality criteria for streams
and other water bodies?
A: The U.S. Geological Survey's Toxic Substances Hydrology (Toxics) Program has done studies of the cycling of toxic substances in aquatic environments that have been used by regulatory agencies to develop water-quality criteria for streams and other water bodies. Information on water-quality criteria can be found at:
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