Fayette County Septic Permits: Fees, Lot Sizes, and Contacts

Sourced from Fayette County Environmental Health, the Fayette County Water System, the Unincorporated Fayette Stormwater Management Program (December 2019), the county zoning ordinance, District 4 Public Health, and Ga. Comp. R. & Regs. 511-3-1 — last checked August 2026.

Fayette Is a Septic County, Not a Sewer County

The Unincorporated Fayette Stormwater Management Program (December 2019) states that “over 90 percent of homeowners operate on septic systems.” That is not a rural-fringe statistic — this is a metro Atlanta county thirty minutes from Hartsfield-Jackson.

The reason is structural rather than accidental: the Fayette County Water System does not provide sewer services. It is a water utility. Sewer in Fayette is a municipal function, and it stops at the city limits of Fayetteville, Peachtree City, Brooks and Tyrone. If your address is unincorporated, you are on an onsite system, and the question of whether sewer is “coming” is a question about annexation, not about a pipe being extended.

Who Issues the Permit

Fayette is one of twelve counties in District 4 Public Health: Butts, Carroll, Coweta, Fayette, Heard, Henry, Lamar, Meriwether, Pike, Spalding, Troup and Upson.

Fayette County Environmental Health: 245 Booker Avenue, Suite E, Fayetteville, GA 30215 — (943) 209-8057
District 4 headquarters: 301 Main Street, LaGrange, GA 30240 — 706-845-4035

Fayette’s Published Fees — and the One Caveat

Every other county in District 4 publishes nothing at all; applicants are told to pay “the associated fee,” set at the county office. Fayette is the exception, and these are the amounts it publishes:

• New residential septic permit — $275
• Septic repair permit — $100
• Existing system evaluation — $125
• Well evaluation — $75
• Septic and well together — $150
• Pool or addition approval — $125

Lot Sizes: Two to Ten Times the State Floor

Georgia’s state minimum for a septic lot is 21,780 square feet (half an acre) with public water, or 43,560 square feet (one acre) with a private well. Fayette’s zoning is far stricter than that, and the applicable minimum depends entirely on which district your parcel sits in:

• A-R (Agricultural-Residential) — 5 acres
• R-85 and R-80 — 3 acres
• EST (Estate) — 2.5 acres
• R-78, R-75, R-72, R-70 — 2 acres
• R-55 through DR-15 — 1 acre with county water, or 1.5 acres if the lot is served by a private well

Notice the pattern in that last line, because it repeats throughout the ordinance: a well adds required acreage. The reason is the 100-foot separation between an absorption field and a well — on a small lot, the two cannot both be sited without more land. If you are comparing two parcels and one has county water available at the road, that is worth real money before you have spent a dollar on soil work.

Replacing an Old Drain Field: There Is No Grandfather Clause

This is the single most expensive misunderstanding in Georgia, and it applies in Fayette exactly as it does everywhere else in the state.

Under Ga. Comp. R. & Regs. 511-3-1-.03(2)(c), repairs, replacements and additions to existing systems must be permitted and inspected. And 511-3-1-.03(1)(b) lets a failing residential system under 2,000 gallons per day avoid forced sewer connection only “if the repair or replacement of the system will meet the criteria set forth in the Manual” — the current Manual, not the one in force when your system was installed.

There is no reduced-criteria table for repairs. A field put in decades ago to the standards of the day gets re-sized to today’s. In practice, one of three things happens: a larger field, relocation to another part of the lot, or an alternative engineered system where conventional design will not fit.

In Fayette this lands differently on different lots. On a 5-acre A-R parcel there is usually room to move. On a 1-acre lot in one of the older R-55 or DR subdivisions, with a well and setbacks already consuming the site, relocation may not be available — and that is where engineered-system costs enter the conversation — see our Georgia septic repair cost breakdown, and the financial assistance routes that exist in Georgia. Find out where your replacement area is before you need it.

Soil Reports, Not Perc Tests

Georgia does not use percolation tests. Permits are decided on a Level 3 soil classification report by a Georgia DPH-certified soil classifier, who must carry $1,000,000 in liability insurance. A contractor offering to run a perc test on your Fayette lot is describing a procedure the state does not accept.

What a New Residential Application Requires

District 4’s application forms are district-wide — one version naming all twelve counties. The New Residential and Residential Repair forms were last revised August 12, 2024; the commercial forms September 6, 2024.

Your lot sketch needs to show dimensions, the building footprint with setbacks, the road name, well locations on your property and on adjacent properties, driveway and paved surfaces, underground utilities, the plumbing stub-out, the proposed drain field location, easements, floodplain, and any detached structures.

Two clocks. The county board of health “shall approve or disapprove such application within twenty days after the receipt of a completed application” (511-3-1-.03). And an issued permit expires 12 months from the date of issue. Notify Environmental Health before final cover — an inspection they were never given the chance to make is a system they will not sign off.

Statewide Rules That Apply in Fayette

None of this is local to Fayette — it comes from DPH Chapter 511-3-1, which we cover in full on our Georgia septic regulations page. These are simply the provisions Fayette applicants hit most often.

• A permit is required before you “begin the physical development of a lot or structure.”
• Only DPH-certified contractors may perform the work.
• Minimum tank size 1,000 gallons; two-compartment with an effluent filter for anything installed after February 20, 2000.
• Setbacks: 50 feet tank to well, 100 feet absorption field to well, and not less than 50 feet from the normal water level of any impoundment, stream or ponded wetland.
• Sewer connection is mandated where public or community sewer is available within 200 feet of the property line. In unincorporated Fayette this rarely applies, because there is no county sewer utility to be available.
• Georgia requires no point-of-sale septic inspection anywhere in the state. Nobody will make you inspect the system on a Fayette house you are buying. The $125 existing-system evaluation above is the cheapest insurance on this page.

Why Sewer Isn’t Simply Coming

Fayette’s septic dependence is a live political question, not a settled background fact, and it is worth knowing the shape of the argument if you are buying or developing here.

Sewer has been extended before: the 2012 extension serving the Pinewood — now Trilith — studio development showed what is possible when a large enough project justifies the infrastructure. In March 2017 the Peachtree City Water and Sewerage Authority voted to allow the sale of sewer capacity outside the city, which opened a route that had previously been closed.

But the counter-pressure is stronger. Because septic capacity effectively caps density, Fayette’s septic dependence functions as a growth control — and a substantial part of the county wants to keep it that way. In the May 2026 District 3 commission race, septic was treated openly as the binding constraint on density, with rezonings moving parcels from 1–2 acre lots up to 5 acres — the same large-lot logic that has long governed Pike County, immediately to the south. Around the same time, a proposed QTS data-center project put county water consumption itself under scrutiny.

The practical read for a homeowner: do not budget on the assumption that sewer will reach an unincorporated Fayette address. Plan the onsite system you will actually live with.

For how Fayette compares with the four health authorities operating across metro Atlanta, see our Atlanta metro septic guide.

All twelve District 4 counties, and what differs between them, are compared on our District 4 septic permits page.