Septic Systems in Florida

67 counties · ~22% of homes on septic · ~699,474 septic systems

State Regulation Overview

Regulatory Body
Florida Department of Health
Inspection Required for Sale
No / Varies by county
Nitrogen Reduction Areas
Yes
Advanced Treatment Areas
Yes

Enhanced Nutrient Reducing OSTDS required in Indian River Lagoon basin. 65% nitrogen reduction mandate by 2030.

Top Counties by Septic Systems

Miami-Dade County
~35,663 septic homes
Duval County
~26,283 septic homes
Broward County
~25,666 septic homes
Pinellas County
~25,320 septic homes
Seminole County
~20,718 septic homes

All Counties in Florida

Alachua County
278K pop · ~16.5% septic
Baker County
28K pop · ~26.4% septic
Bay County
175K pop · ~16.5% septic
Bradford County
28K pop · ~26.4% septic
Brevard County
607K pop · ~6.6% septic
Broward County
1944K pop · ~3.3% septic
Calhoun County
14K pop · ~30.8% septic
Charlotte County
187K pop · ~16.5% septic
Citrus County
154K pop · ~16.5% septic
Clay County
218K pop · ~16.5% septic
Collier County
376K pop · ~11% septic
Columbia County
70K pop · ~22% septic
DeSoto County
34K pop · ~26.4% septic
Dixie County
17K pop · ~26.4% septic
Duval County
996K pop · ~6.6% septic
Escambia County
322K pop · ~11% septic
Flagler County
115K pop · ~16.5% septic
Franklin County
12K pop · ~30.8% septic
Gadsden County
44K pop · ~26.4% septic
Gilchrist County
18K pop · ~26.4% septic
Glades County
12K pop · ~30.8% septic
Gulf County
14K pop · ~30.8% septic
Hamilton County
14K pop · ~30.8% septic
Hardee County
25K pop · ~26.4% septic
Hendry County
40K pop · ~26.4% septic
Hernando County
195K pop · ~16.5% septic
Highlands County
101K pop · ~16.5% septic
Hillsborough County
1460K pop · ~3.3% septic
Holmes County
20K pop · ~26.4% septic
Indian River County
160K pop · ~16.5% septic
Jackson County
47K pop · ~26.4% septic
Jefferson County
15K pop · ~30.8% septic
Lafayette County
8K pop · ~30.8% septic
Lake County
384K pop · ~11% septic
Lee County
761K pop · ~6.6% septic
Leon County
292K pop · ~16.5% septic
Levy County
43K pop · ~26.4% septic
Liberty County
8K pop · ~30.8% septic
Madison County
18K pop · ~26.4% septic
Manatee County
400K pop · ~11% septic
Marion County
376K pop · ~11% septic
Martin County
158K pop · ~16.5% septic
Miami-Dade County
2702K pop · ~3.3% septic
Monroe County
83K pop · ~22% septic
Nassau County
90K pop · ~22% septic
Okaloosa County
212K pop · ~16.5% septic
Okeechobee County
40K pop · ~26.4% septic
Orange County
1430K pop · ~3.3% septic
Osceola County
389K pop · ~11% septic
Palm Beach County
1492K pop · ~3.3% septic
Pasco County
562K pop · ~6.6% septic
Pinellas County
959K pop · ~6.6% septic
Polk County
725K pop · ~6.6% septic
Putnam County
73K pop · ~22% septic
Santa Rosa County
188K pop · ~16.5% septic
Sarasota County
434K pop · ~11% septic
Seminole County
471K pop · ~11% septic
St. Johns County
273K pop · ~16.5% septic
St. Lucie County
329K pop · ~11% septic
Sumter County
130K pop · ~16.5% septic
Suwannee County
43K pop · ~26.4% septic
Taylor County
22K pop · ~26.4% septic
Union County
16K pop · ~26.4% septic
Volusia County
554K pop · ~6.6% septic
Wakulla County
34K pop · ~26.4% septic
Walton County
75K pop · ~22% septic
Washington County
25K pop · ~26.4% septic

Septic Systems in Florida

Approximately 22% of homes in Florida rely on septic systems for wastewater treatment, totaling an estimated 699,474 septic systems across the state's 67 counties. This places Florida among the states with significant decentralized wastewater infrastructure.

Septic Regulations in Florida

Septic regulations in Florida are administered by Florida Department of Health, with permits typically issued at the county level through local health departments. Requirements for tank sizes, setback distances, approved system types, and inspections can vary significantly between counties.

While Florida does not have a statewide mandate for septic inspections at the time of property sale, individual counties may impose their own requirements. It is common practice for buyers to request a septic inspection as part of their due diligence, even when not legally required.

Common Septic System Types

Homeowners in Florida typically use one of several septic system types depending on local soil conditions: conventional gravity-fed systems where soil percolation is adequate, pressure distribution systems in areas with moderate limitations, mound systems where shallow bedrock or high water tables prevent conventional installation, and aerobic treatment units (ATUs) in environmentally sensitive areas or nitrogen reduction zones.

Septic Maintenance Requirements

The EPA recommends pumping septic tanks every 3 to 5 years, though the exact frequency depends on tank size, household size, and water usage. In Florida, some counties have adopted mandatory pumping schedules or maintenance tracking programs. Proper maintenance prevents costly repairs, protects groundwater quality, and extends the lifespan of the drainfield — the most expensive component to replace.

Select a county above to view detailed septic regulations, estimated costs, soil suitability data sourced from the USDA NRCS Soil Survey, and groundwater depth measurements from the USGS.

Data last updated: 2026-04-13