FL Department of Environmental Protection (FL)
From The RadioReference Wiki
FL DEP District webtsite with map and county by county https://floridadep.gov/districts
District 1 Northwest Bay Calhoun Escambia Franklin Gadsden Gulf Holmes Jackson Jefferson Leon Liberty Okaloosa Santa Rosa Wakulla Walton Washington
District 2 Northeast Alachua Baker Bradford Clay Columbia Dixie Duval Flagler Gilchrist Hamilton Lafayette Levy Madison Nassau Putnam St. Johns (Saint Johns) Suwannee Taylor Union
District 3 Central Brevard Lake Marion Orange Osceola Seminole Sumter Volusia
District 4 Southwest Citrus Hardee Hernando Hillsborough Manatee Pasco Pinellas Polk
District 5 Southeast Broward Dade Martin Indian River Okeechobee Palm Beach St Lucie (Saint Lucie)
District 6 South Charlotte Collier DeSoto Glades Hendry Highlands Lee Monroe Sarasota