Douglas County Septic Permits: Your Water Provider Has a Say

Sourced from Cobb & Douglas Public Health, the Douglas County Board of Health On-Site Sewage Management Systems Rule (January 2016), the Douglasville-Douglas County Water and Sewer Authority, a 2002 copy of the county watershed protection ordinance, and Ga. Comp. R. & Regs. 511-3-1 — last checked August 2026.

Who Issues Douglas County Septic Permits

Douglas County is served by Cobb & Douglas Public Health, a two-county health district. It is not part of District 4, which covers the twelve counties south and west of Atlanta, and it is not part of Northwest Georgia. Getting the district wrong sends you to the wrong forms and the wrong fee schedule, so it is worth being certain.

Douglas has its own Environmental Health office rather than sharing Cobb’s:

Environmental Health: 4655 Timber Ridge Drive, Douglasville, GA 30135 — (770) 920-7311

The Assistance Grant Is Closed in Douglas — and the Cobb Figures Do Not Apply

This is the most important thing on this page for anyone who arrived looking for help paying for a repair, so we are putting it plainly rather than burying it.

Cobb & Douglas Public Health runs an ARPA-funded Low-Income Septic System Pump/Repair Project, and it is generous: up to $500 for pumping, up to $15,000 for repairs including drain-field replacement, and up to $10,000 to connect to public sewer, paid directly to the contractor.

It is not available in Douglas County. Cobb & Douglas states that heavy demand for low-income septic pump and repair services, against limited funding, means applications are no longer being accepted for the project in Douglas County. The eligibility questions now require that the home be located in Cobb County.

Douglas did have its own version. It ran on a separate county ARPA grant from March 26, 2025 to December 31, 2025, and it is finished. Cobb’s program continues into late 2026, which is exactly why the confusion persists — the same health district administers both, and one is open.

Douglas Fees Are Published — and They Rise on January 1, 2027

Unlike the District 4 counties, which publish no fee amounts at all, Cobb & Douglas publishes a schedule. Two of them, in fact, and the second one matters if you are deciding when to file.

Effective January 1, 2020 — the schedule in force now:

• Residential new permit — $250
• Residential lot site review — $110
• Residential repair or modification — $170
• Minor repair, not involving field lines — $85
• Existing-system visual evaluation — $150

Effective January 1, 2027:

• Residential new permit — $320
• Residential lot site review — $141
• Residential repair or modification — $218
• Minor repair, not involving field lines — $109
• Existing-system visual evaluation — $192
• Re-inspections — $125, then $175, then $225, then $275

That is roughly a 28 percent increase across the residential lines. A new permit goes from $250 to $320; a repair from $170 to $218. If you are planning non-urgent work and the timing is genuinely yours to choose, filing before the new year is worth about $70 on a new permit. An emergency repair is not worth delaying over $48.

Note the escalating re-inspection ladder in the 2027 schedule. Four failed re-inspections cost $800 on their own. The cheapest inspection is the one that passes first time, which is an argument for a competent installer rather than the lowest bid.

Your Water Provider Can Require Septic Maintenance

This is genuinely unusual, and we have not found it anywhere else in Georgia.

The Douglasville-Douglas County Water and Sewer Authority has, since 1991, required proper septic system maintenance within the Dog River Drainage Basin as a condition of water service.

Read that carefully, because the mechanism is different from every other rule on this page. Everything else here is enforced by the health department through the permit. This is enforced by the utility, through your water supply. It is a contractual condition of being a customer, not a public health citation.

Dog River is a drinking-water supply reservoir, which is why the authority has an interest in what happens to wastewater upstream of it. If your property is in the Dog River basin, the practical consequence is that septic maintenance is not merely advisable — it is attached to a service you cannot do without. DDCWSA: (770) 920-3823.

Ask two questions on that call: whether your parcel is inside the Dog River Drainage Basin, and what the authority accepts as evidence of proper maintenance. Pumping receipts are the usual answer, which is a good reason to keep them.

Lot Size, Setbacks, and the 110 Percent Recharge Rule

The Douglas County Board of Health On-Site Sewage Management Systems Rule, dated January 2016, sets the local layer:

• Minimum lot size: 21,780 square feet (half an acre) with public water, 43,560 square feet (one acre) with a private well
• Sewer connection mandated where public sewer is available within 200 feet of the property line, or where it abuts the right-of-way
• Tank setbacks: 50 feet from a well, 25 feet from a water body, 10 feet from a property line
• Absorption field setbacks: 100 feet from a well, 50 feet from a water body

And the provision most likely to surprise you: inside a designated groundwater recharge district, a lot served by septic must be at least 110 percent of the subdivision minimum. So a half-acre minimum becomes 23,958 square feet, and an acre becomes 47,916. It is not a large uplift, but it is applied on top of the zoning minimum rather than instead of it, and it is easy to miss when you are checking whether a lot is buildable.

The Watershed Buffers We Could Only Read in an Old Copy

Douglas County protects two water supply watersheds with stream buffers, and those buffers can take a drain field off the table entirely on a riparian lot.

Here is the problem: the buffer figures we could read come from a 2002 copy of the watershed protection ordinance. The current Unified Development Code Article 9, revised March 2024, is the governing text, and we could not retrieve it.

What the 2002 copy shows, which you should treat as indicative and not current:

• Dog River watershed — 200-foot stream buffer, 250-foot activity setback, impervious surface capped at 10 percent where unsewered
• Bear Creek watershed — 150-foot stream buffer

Do not site anything off those numbers. Twenty-four years is long enough for buffers to widen, narrow or be redrawn, and a 200-foot buffer that turns out to be 250 feet is the difference between a permit and a redesign. Ask Douglas County planning for the current Article 9 buffer widths in writing. We are publishing the old figures only so you know which question to ask — not as an answer.

What a New Application Requires in Douglas

Cobb & Douglas asks for more documentation than most Georgia health departments, and the details are specific enough to fail on.

• A Level 3 soil survey for new construction — and specifically “a red stamped copy with the classifiers’ insurance attached.” A photocopy or an unstamped PDF is not what is being asked for
• Three copies of the site plan, drawn at 1 inch to 20 feet, with 2-foot contours
• A replacement field location shown on the plan — the reserve area has to be identified, not assumed

Replacing an Old Drain Field: There Is No Grandfather Clause

This is the fact that costs Georgia homeowners the most money, and almost nobody hears it up front.

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” — today’s Manual, not the one in force when the system went in.

There is no reduced-criteria table for repairs. A field installed decades ago to the standards of its day gets re-sized to current standards. In practice that means a larger field, relocation to another part of the lot, or an alternative engineered system where conventional trenches no longer fit. On a Douglas County lot that is also inside a recharge district or a watershed buffer, those three options can narrow to one. See our Georgia septic repair cost page for what that does to a budget.

Soil Reports, Not Perc Tests

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

Statewide Rules That Apply in Douglas

None of this is local to Douglas — it comes from DPH Chapter 511-3-1, covered in full on our Georgia septic regulations page. These are simply the provisions Douglas 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.
• No point-of-sale septic inspection is required anywhere in Georgia. If you are buying, the existing-system visual evaluation is voluntary — and at $150 now, $192 from 2027, it is the cheapest survey on the closing table.

What We Could Not Confirm

Where Douglas Sits

Douglas County is western metro Atlanta — Douglasville, Lithia Springs, Winston — sitting between Cobb to the north and Carroll to the west, with the Chattahoochee forming its northern edge and the Dog River reservoir supplying its water. It is a county where three different bodies can have a say in your septic system: the health district issues the permit, county planning controls the watershed buffers, and the water authority can attach maintenance to your service.

Nearby counties we cover: Cobb County · Carroll County · Coweta County. Cobb shares the health district but not the assistance eligibility; Carroll and Coweta are District 4, with a different fee position entirely. The metro picture is on our Atlanta metro septic guide.