Triennial Review of Water Quality Standards

States are required under the Federal Clean Water Act (40 CFR 131.20) to conduct a comprehensive review of all water quality standards at least once every three years (Triennial Review). The Florida Department of Environmental Protection (DEP) has proposed revisions to Chapter 62-302, Chapter 62-303, and Rule 62-4.242, Florida Administrative Code (F.A.C.) as part of the Triennial Review of Florida's Water Quality Standards. DEP will present its proposed revisions to Florida's surface water quality standards to the Florida Environmental Regulation Commission (ERC) for approval to adopt at a public hearing.

WHAT: ERC Adoption Public Hearing for the Triennial Review of Florida's Water Quality Standards

WHEN: Sept. 25, 2025 - 9 a.m. EDT

WHERE: Florida Department of Environmental Protection,

Marjory Stoneman Douglas Building, Conference Room 137,

3900 Commonwealth Blvd. Tallahassee, FL 32399

DEP previously conducted a public workshop on Sept. 10, 2024, and has published Notices of Proposed Rule for each chapter in the Florida Administrative Register.

Please contact Kaitlyn Sutton (850-245-8819) or Nia Wellendorf (850-245-8190) if you have any questions about the ERC Hearing or triennial review.

The coded rule language is located within each Notice of Proposed Rule links (below).

Notice of Proposed Rule: Chapter 62-302, Chapter 62-303 and Rule 62-4.242.
Statement of Estimated Regulatory Costs (SERC)

The proposed rule language, implementation documents, maps and other supporting documentation are provided in the table below.

Triennial Review Updates	Documents
Rule Revisions	Chapter 62-302, F.A.C. (Revision made to sub-subparagraph 62-302.531(2)(a)1.a., F.A.C., on 8/23/24) Chapter 62-303, F.A.C. (Revision made to subsection 62-303.360(5), F.A.C., on 8/1/24) Rule 62-4.242, F.A.C.
Numeric Nutrient Criteria	NNC Implementation Document ENR Maps Big Bend and Apalachee Bay Map 1 of 2 Halifax and Tomoka River Estuaries Pensacola Bay Lower St. Johns River to Nassau River Clam Bay St. Lucie Estuary Coastal Segment Map
FPL Martin Total Ammonia Nitrogen SSAC	Map of Proposed TAN SSAC Area Mussel Report 4-3-18
Class II Maps	Bay County Class II Map Charlotte County Class II Map Collier County Class II Map 1 of 2 Collier County Class II Map 2 of 2 Duval and Nassau Counties Class II Map Escambia and Santa Rosa Counties Class II Map Flagler County Class II Map Gulf County Class II Map Jefferson County Class II Map Lee County Class II Map Manatee County Class II Map Martin County Class II Map Monroe County Class II Map 1 of 2 Monroe County Class II Map 2 of 2 Okaloosa County Class II Map Palm Beach County Class II Map Pinellas and Hillsborough Counties Class II Map Sarasota County Class II Map – Lemon Bay Sarasota County Class II Map – Myakka River Sarasota County Class II Map – Sarasota Bay St. Johns County Class II Map 1 of 2 St. Johns County Class II Map 2 of 2 Wakulla County Class II Map
Other Items	Appendix I of the DO TSD

September 10th, 2024 workshop materials:

Triennial Review of Water Quality Standards

Water-Quality-Standards Quick links

Triennial Review of Water Quality Standards