Florida Septic Regulations for Homeowners

A one-page guide to the rules that apply to a home septic system in Florida: who issues permits, which jobs need one, and the extra rules for aerobic units and springs areas. Each rule is summarized in a line, with links to the official text. This is general information, not legal advice. Your county's permit office has the final word on your property.

The rules in one line each

Topic	Where	Rule in one line
Permits	s. 381.0065(4), F.S.	No one may build, repair, modify, abandon or operate a system without a permit approved by DEP.
What is a repair	Rule 62-6.002(51)	Work on a failing system so it works as designed or to remove a health or pollution hazard.
Not a repair	Rule 62-6.002(51)	Pumping (drain field not disturbed), a new lid, an approved outlet filter, like-for-like parts, minor fixes to a tank or distribution box.
Aerobic units (ATUs)	s. 381.0065(4), F.S.	Operating permit valid 2 years, plus a contract with a maintenance entity that inspects at least twice a year (owner-occupied single-family homes: the trained owner can be permitted instead).
Nitrogen-reducing systems	s. 381.0065(2)(f), F.S.	At least 50% nitrogen reduction before the drain field, or 65% for tank and drain field combined.
New systems in nutrient areas	DEP (HB 1379)	Since July 1, 2023, new systems on lots of 1 acre or less in BMAP areas must be nitrogen-reducing where sewer is not available.
Home sales	s. 381.0065(4)(x), F.S.	No government may require a septic inspection at the point of sale.
Contractors	Ch. 489, Part III, F.S.	Septic tank contractors are registered by DEP.

When you need a permit

Florida law says a person may not construct, repair, modify, abandon or operate a septic system "without first obtaining a permit approved by the department." In practice, that means:

• A new system needs a construction permit before work starts.
• A repair usually needs a permit. Rule 62-6.002 defines a repair as replacing, changing or adding to a failing system so it works as designed, or to remove a public health or pollution hazard. Replacing a failed drain field falls under this definition.
• A modification to a system needs a permit.
• Abandoning a system needs a permit.

The same rule lists work that does not count as a repair. Ask your permit office if you are not sure.

• Pumping out a tank, where the drain field is not disturbed.
• Replacing a broken tank lid.
• Installing an approved outlet filter, where the drain field is not disturbed.
• Servicing or replacing mechanical or electrical parts with like-kind parts, such as a pump.
• Minor structural fixes to a tank or distribution box.

The state sets base fees in Rule 62-6.030 (for example, $55 for a permit and $50 for a repair evaluation), and county health departments add their own. In Seminole County, for example, a repair permit costs $350 and a new system $425 (FY 2025-2026). Ask your permit office for its current fees. Before you sign a contract, ask the company who will apply for the permit.

Aerobic treatment units (ATUs)

An aerobic treatment unit pumps air into the wastewater to treat it before it reaches the drain field. Because it has moving parts, Florida adds two ongoing duties for the owner:

• Operating permit: valid for 2 years after it is issued and must be renewed every 2 years. The state base fee for the 2-year operating permit is $100; counties add their own (Seminole charges $150).
• Maintenance contract: the owner must keep a service agreement with a maintenance entity, which must inspect the unit at least twice a year. The owner of an owner-occupied single-family home can instead be permitted to maintain the unit personally after training certified by the manufacturer.
• State inspections: the law also says the department inspects buildings that use an ATU at least once a year.

For what the contract usually covers and costs, see aerobic system service and conventional vs. aerobic septic systems in Florida.

Nitrogen-reducing systems and springs areas

Conventional septic systems are not built to remove nitrogen, and nitrogen from septic systems can reach springs and other waters. Florida now requires enhanced nutrient-reducing (ENR) systems in some places. An ENR system must remove at least 50% of total nitrogen before the drain field, or at least 65% for the tank and drain field combined.

Where the rules apply depends on Basin Management Action Plans (BMAPs), the state's cleanup plans for polluted waters. Springs BMAPs can also include a Priority Focus Area (PFA): the most vulnerable area near the spring, where sandy soil lets septic nitrogen reach the aquifer and the spring.

Area	New systems	Repairs and modifications
Any BMAP area (statewide rule)	Lots of 1 acre or less must use ENR where sewer is not available (since July 1, 2023)	No statewide upgrade rule; depends on the BMAP
Silver/Rainbow springs BMAP (parts of Marion, Lake, Alachua, Putnam, Sumter and Levy counties)	Lots of 1 acre or less must use ENR (since July 1, 2023). Any lot size in the BMAP must use ENR as of July 27, 2026, according to DEP's August 2026 table.	Any lot size in the BMAP requires ENR
Wekiwa Spring and Rock Springs BMAP	Lots of 1 acre or less must use ENR	Lots under 1 acre in the PFA require ENR. Orange County says this has applied since March 1, 2025, with an upgrade to a system that removes at least 65% of nitrogen.

About the Silver/Rainbow dates: DEP adopted the updated Silver/Rainbow BMAP by final order on June 27, 2025. The order was challenged, and after the last challenge was dropped, DEP declared the plan final and effective on April 27, 2026. DEP's August 2026 table then lists the any-lot-size rule for new systems as of July 27, 2026.

DEP's table also notes that under the 2025 springs BMAPs, including Silver/Rainbow, conventional systems in areas covered by the remediation policy must be upgraded, replaced with a system that removes at least 65% of nitrogen, or connected to sewer no later than 20 years after the BMAP was adopted. The rules change as BMAPs are updated, so check the latest DEP table before you plan a project.

In Orange County, the county's Septic Upgrade Incentive Program pays up to $10,000 toward an upgrade for eligible homes in the Wekiwa PFA in unincorporated Orange County, served by Orange County Utilities. For other help, see septic repair assistance and financing in Florida. For a longer explanation, read springs protection and nitrogen-reducing septic systems.

How to check whether your lot is affected

1. Open DEP's Springs BMAP and HB 1379 requirements map, linked from DEP's ENR permitting page, and search your address. DEP's older PFA map (FloridaDEP.gov/PFAMap) also shows the Priority Focus Areas.
2. In Orange County, the county's SUIP eligibility lookup tool shows whether a home is in the Wekiwa PFA area the program covers.
3. Check DEP's latest table of ENR requirements by BMAP (linked in the sources below).
4. Confirm with your county permit office before you buy a lot or plan a repair. Maps are a starting point, not a ruling.

Setbacks (general)

Rule 62-6.005 sets how far a septic system must be from wells, water and buildings. A few of the main distances are below. They are general: the rule has exceptions, older lots and systems can follow different numbers, and the permit office decides for each site.

From	Minimum distance
Private drinking water well	75 feet
Public drinking water well	100 or 200 feet, depending on the facility's sewage flow
Non-drinking (non-potable) water well	50 feet
Surface water bodies	75 feet
Building foundations, pool walls, property lines	5 feet (and never under a building)
Storm sewer pipe	10 feet where possible, never less than 5 feet
Swales and retention or detention areas	15 feet from the design high-water line

Contractor registration

Septic tank contractors in Florida are registered by DEP under Part III of Chapter 489, Florida Statutes. Individuals hold a registered (SR) or master (SM) number. A septic business set up as a corporation, limited liability company, partnership or association, or any business working under a fictitious name (s. 489.555(2), F.S.), also needs a certificate of authorization (SA numbers in DEP's lists); DEP says a sole proprietorship using the owner's legal name does not. Plumbing licenses are a separate credential. To check a company, follow the steps in how to verify a Florida septic contractor.

Home sales: no required inspection

Florida law says an inspection of a septic system "may not be mandated by a governmental entity at the point of sale in a real estate transaction." A 2010 law created a statewide septic inspection program on a 5-year cycle, but it was delayed and then repealed in 2012. A buyer can still choose to get an inspection. See septic systems and real estate in Florida.