Do You Need a Permit for a Septic System in Florida?

If your Florida property isn't connected to a public sewer system, you almost certainly have an onsite septic system — and any work on that system requires a permit. Florida law mandates a permit for the installation, modification, repair, or abandonment of any onsite sewage treatment and disposal system (OSTDS), no matter which county you live in. The authority comes directly from Florida Statute 381.0065, which governs all septic systems statewide and sets the framework for the inspection, approval, and monitoring of every system in the ground. Skip the permit and you face fines, mandatory removal, and serious environmental liability.

Who Issues Septic Permits in Florida — the Health Department or DEP?

For most of Florida's history, the county health department (DOH) issued all septic permits. That's still true for most of the state, but a major transition is underway. Starting January 2, 2025, the Florida Department of Environmental Protection (DEP) took over septic permitting in 16 Panhandle counties: Bay, Calhoun, Escambia, Franklin, Gadsden, Gulf, Holmes, Jackson, Jefferson, Leon, Liberty, Okaloosa, Santa Rosa, Wakulla, Walton, and Washington — plus Marion County. DEP will eventually take over permitting statewide, but as of mid-2026, all remaining counties still use their local county health department.

In practice, this means:

• Panhandle counties and Marion County: Apply through the Florida DEP for new installations and repairs.
• All other Florida counties (including Hillsborough, Orange, Palm Beach, Miami-Dade, Lee, Broward, and all remaining counties): Apply through your county health department's environmental health division.

Regardless of which agency issues your permit, the technical standards are the same: Chapter 64E-6 of the Florida Administrative Code sets the rules for system design, setbacks, soil requirements, and installation methods across the entire state.

What Are Florida's Setback Requirements for Septic Systems?

Chapter 64E-6 FAC establishes minimum setback distances that every Florida septic system must meet. These rules exist to protect drinking water sources and the surrounding environment:

• Private drinking water well: The septic tank and drainfield must be located at least 75 feet from any private potable water well
• Public water supply well: At least 200 feet from any public drinking water well
• Building foundation: At least 5 feet from any building's foundation
• Surface water bodies: At least 75 feet from the boundary of any lake, river, stream, or other surface water body
• Potable water lines: At least 10 feet from any potable water distribution line (unless the line is sealed with a waterproof sealant)
• Seasonal high water table: At least 24 inches of vertical separation between the bottom of the drainfield and the seasonal high water table

These are statewide minimums. Some counties and municipalities impose stricter setbacks for properties near sensitive water bodies, wellfields, or springs. In counties near Florida's springs — such as Alachua, Levy, and Citrus counties — certain properties in Basin Management Action Plan (BMAP) areas may need Enhanced Nutrient Reduction (ENR) systems that go well beyond standard rules.

What Does the Florida Septic Site Evaluation Involve?

Before a construction permit can be issued, the permitting agency must first conduct a site evaluation of your property. This is not optional — it's required under Florida Statute 381.0065 as the foundation for determining what type of system your lot can support.

During the site evaluation, an environmental health specialist (or DEP evaluator) visits your property to:

• Collect soil samples and conduct percolation tests to determine soil absorption rates
• Measure the depth to the seasonal high water table using observation holes or soil mottling analysis
• Verify the lot's dimensions and identify setback constraints from wells, property lines, and water bodies
• Determine the minimum lot size and available area for the drainfield and its required repair zone

The site evaluation produces a report that specifies the type of system permitted for your lot — whether a conventional gravity drainfield, a mound system, an aerobic treatment unit (ATU), or a more advanced enhanced treatment system. You cannot choose your system type freely; the site evaluation dictates the options your soil and water table will support.

How Much Does a Florida Septic Permit Cost?

Florida septic permitting involves two separate fees: a site evaluation fee and a construction permit fee. Both are paid to the issuing agency (county DOH or DEP, depending on your county).

• Site evaluation fee: $400–$800 depending on the county
• Construction permit fee: $475–$525 in most counties (Broward County approximately $575; Lee County approximately $550; Columbia County approximately $475)
• Repair permit fee: $200–$275 for repair or modification of an existing system — significantly less than a new installation permit

These are the government permit fees only. The actual cost of installing a septic system in Florida ranges from roughly $5,000 for a conventional gravity system on a favorable lot to $20,000 or more for an advanced treatment system on a difficult site. Aerobic treatment units (ATUs) and mound systems fall in the middle — typically $8,000–$15,000 installed. These installation costs are separate from the permit fees listed above.

Some counties also charge additional fees for the required inspections or for expedited plan review. Contact your county health department or the DEP regional office for the precise fee schedule applicable to your project and location.

What Documents Are Required for a Florida Septic Permit Application?

After the site evaluation is complete, you'll submit a construction permit application that typically includes:

• Completed permit application form: Provided by your county DOH or DEP regional office
• Site plan: A scaled drawing showing the lot boundaries, the proposed location of the septic tank and drainfield, all setback measurements, the location of any wells, and the location of the residence
• System design drawings: Prepared by the installing contractor or a licensed engineer, showing tank size, drainfield dimensions, pipe layout, and depth specifications
• Site evaluation report: Issued by the health department after the site visit — this document confirms the soil conditions and permitted system type
• Contractor license: The installing contractor must hold a current Florida septic contractor license issued by the DOH (Florida Statutes 489.105 and 489.553 govern septic contractor licensing)
• Permit fee payment: Paid at time of application submission

For new homes or major additions, you'll also need to coordinate the septic permit with the building permit from your county building department. The building permit often lists the septic permit number as a prerequisite for final inspection, so both tracks need to move in parallel.

How Long Does the Florida Septic Permitting Process Take?

From the initial site evaluation through permit approval and construction, Florida's septic permitting process typically runs 4 to 12 weeks, depending on the county and workload of the issuing agency. Here's how the timeline typically breaks down:

• Site evaluation scheduling: 1–3 weeks to get on the evaluator's calendar, depending on county backlog
• Site evaluation report: Usually issued within 1–2 weeks after the site visit
• Construction permit review: 2–4 weeks after a complete application is submitted
• Installation and final inspection: Scheduled after the permit is issued; the inspector must approve the installation before you backfill the drainfield

Incomplete applications are the leading cause of delays. Missing a site plan, using an unlicensed contractor, or submitting system designs that don't match the site evaluation report will kick the application back for resubmission and add weeks to the process. Using a licensed septic contractor who regularly works in your county is the most reliable way to keep the process moving.

What Happens If You Install a Septic System Without a Permit in Florida?

Installing or modifying a septic system without a permit in Florida is a serious violation of state law. Under Florida Statute 381.0065, unpermitted onsite sewage systems are considered a public health hazard and can trigger enforcement actions including:

• Stop-work orders and mandatory system abandonment until the violation is resolved
• Fines issued by the county health department or DEP for each day the violation continues
• Mandatory system removal if the installation doesn't meet current code requirements and can't be permitted after the fact
• Environmental liability if a failing unpermitted system causes groundwater contamination
• Problems at sale: Title searches and septic inspections will flag an unpermitted system, and most lenders will not close until the system is properly permitted and inspected

If you've inherited a property with an older, unpermitted system, most counties offer a path to bring the system into compliance — but this typically requires a new site evaluation, potentially system upgrades to meet current standards, and payment of fees. For a full picture of what unpermitted work can cost you, read our guide on what happens if you build without a permit in Florida.

Skip the headache — tell us about your project and we'll match you with a licensed permit pro in your county.