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Recommended Aquatic Life Ambient Water Quality Criterion for Selenium in Freshwater (Final)
Jul. 13, 2016
EPA is releasing the final updated CWA section 304(a) recommended national chronic aquatic life criterion for the pollutant selenium in fresh water. The final criterion supersedes EPA's 1999 CWA section 304(a) recommended national acute and chronic aquatic life criteria for selenium. The 2016 recommended criterion reflects the latest scientific information, which indicates that selenium toxicity to aquatic life is primarily based on organisms consuming selenium-contaminated food rather than direct exposure to selenium dissolved in water. EPA's water quality criterion for selenium provides recommendations to states and tribes authorized to establish water quality standards under the CWA. POC is Joe Beaman, Health and Ecological Criteria Division, Office of Water (Mail Code 4304T), EPA, 1200 Pennsylvania Avenue NW., Washington, DC 20460; tel: 202-566-0420; email: beaman.joe@epa.gov (Federal Register; 13 June 2016 [Notices], pages 45285-45287).

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Last Updated: January 22, 2018