Sourced from section 381.0065 Florida Statutes, Chapter 62-6 F.A.C., and Florida DEP onsite sewage program guidance last modified January 2026 — last checked July 2026.
Who Regulates Septic Systems in Florida
DEP has held statutory authority over onsite sewage since July 1, 2021, under the Clean Waterways Act of 2020. Operational permitting is transferring in phases.
Phase 1 moved sixteen Northwest Florida counties — Escambia through Jefferson — to DEP permitting on January 2, 2025. Marion County followed on July 1, 2025.
For the remaining counties, DEP’s own guidance is now explicit: the transition “will occur depending on legislative approval,” with the timeline listed as to be determined. Earlier materials circulated a December 2026 completion date; that is no longer what DEP states.
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Core Requirements
A permit is required before installing, repairing, or modifying any onsite sewage treatment and disposal system.
Homeowners cannot install their own systems. Section 381.0065 requires work be performed by a state-registered or Master Septic Tank Contractor. This is stricter than many states and is not waivable.
A site evaluation assessing soil, topography, and water table determines what the property can support. You may have the permitting authority perform it or hire a qualified private site evaluator — if you use a private evaluator, the evaluation must be complete before you submit the application.
Private provider inspections have been permitted since July 1, 2022, allowing owners or authorized contractors to hire a private provider rather than waiting on the permitting office.
The Nitrogen Rules
Florida’s most consequential recent change is HB 1379 (Laws of Florida 2023-169), which expanded where enhanced nutrient-reducing systems are mandatory.
| Effective | Requirement |
|---|---|
| July 1, 2023 | New systems on lots of one acre or less in BMAP, RAP, or PRP areas must be ENR-OSTDS when sewer is unavailable |
| January 1, 2024 | In the Indian River Lagoon Protection Program area, new systems on lots of any size must be ENR-OSTDS |
| July 1, 2030 | Existing systems on commercial property, or residential property of 10 acres or less, in the Indian River Lagoon area must connect to sewer where available or upgrade to at least 65% nitrogen reduction |
HB 1379 amended the Florida Springs and Aquifer Protection Act (s. 373.811 F.S.) and s. 403.067 F.S., and created the Indian River Lagoon Protection Program at s. 373.469 F.S. It is worth being precise about this, because some sources attribute the ENR requirement to 2016 legislation. The 2016 Springs Act created the original springs framework; HB 1379 in 2023 is what extended it.
Local Rules Can Exceed State Rules
DEP states plainly that many counties have local ordinances that exceed state requirements. In counties still permitting through the health department, the county also sets the total permitting fee, including county-specific charges. That is why quoted permit costs vary so widely across Florida — the state framework is a floor, not the complete picture.
Where to Verify Your Situation
DEP publishes official mapping tools showing BMAP, Alternative Restoration Plan, and Priority Focus Area boundaries, plus a Priority Focus Area map. These give a parcel-level answer and are the definitive source when cost hinges on whether you fall inside a plan area. General questions can go to the DEP Onsite Sewage Program at OSTDS_Feedback@FloridaDEP.gov.
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Frequently Asked Questions
What law governs septic systems in Florida?
Section 381.0065, Florida Statutes and Chapter 62-6, Florida Administrative Code. DEP has held statutory authority since July 1, 2021.
Has the DEP transition finished?
No. Seventeen counties permit through DEP. Per DEP guidance updated January 2026, the remaining counties transition depending on legislative approval, with no fixed date announced.
What is HB 1379?
A 2023 law (Laws of Florida 2023-169) that expanded where enhanced nutrient-reducing systems are required, and created the Indian River Lagoon Protection Program.
Can counties impose stricter septic rules than the state?
Yes. DEP states that many counties have local ordinances exceeding state requirements. In health department counties, the county also sets the total permitting fee.