Coastal water quality information (datasets and multimedia presentations) are available at the Ocean Resources Conservation and Assessment office of the National Oceanic and Atmospheric Administration.
Information on coastal water quality and information on estuaries is available at the U.S. Environmental Protection Agency's Office of Wetlands, Oceans and Watersheds and for information on shellfish related issues, see their Shellfish Protection page.
The Interstate Certified Shellfish Shippers List (ICSSL) is published monthly for the information and use by food control officials, seafood industry and other interested persons. The shippers listed have been certified by regulatory authorities in the United States, Canada, New Zealand and Mexico under the uniform sanitation requirements of the National Shellfish Program.