As required by the Federal Clean Water Act, the Department of Environmental Protection (Department) is conducting the Triennial Review of state surface water quality standards. All surface water quality standards in Chapter 62-4, Chapter 62-302, and Chapter 62-303, F.A.C., are under review and may be revised as part of the Triennial Review. This Notice of Rule Development represents a continuation of the Triennial Review rulemaking effort that was first initiated by the publication of a Notice of Rule Development in the FAR on March 29, 2019.