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Draft Technical Support Document: Implementing the 2019 Recommended Human Health Recreational Ambient Water Quality Criteria or Swimming Advisories for Microcystins and Cylindrospermopsin

EPA released a draft technical support document, in the form of a questions and answers document, to support the implementation of EPA’s recently published recommended CWA section 304(a) Recreational Water Quality Criteria or Swimming Advisories for Microcystins and Cylindrospermopsin. The draft technical support document addresses the adoption, assessment and listing for the new recreational criteria. The public comment period on the draft document closed on February 14, 2020.  EPA is the process of revising the document to address comments the Agency received.

(Note: If you need assistance with the above document, call John Healey at 202-566-0176.)

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