Sourced from GNR Health (Gwinnett, Newton, Rockdale Health Districts) published fee schedule and program documentation, and Gwinnett County Department of Water Resources — last checked July 2026.
Who Issues Gwinnett Septic Permits
Gwinnett County septic permits are handled by GNR Health, the combined health district covering Gwinnett, Newton, and Rockdale counties. This surprises people who call the county government first.
Environmental Health office: 455 Grayson Highway, Suite 600, Lawrenceville, GA 30046
Phone: 770-963-5132
The Level 3 Soil Report Requirement
This is Gwinnett’s most consequential local rule. As of February 7, 2022, GNR Health requires a Level 3 soil report — prepared by a Georgia Certified Soil Classifier — before issuing any septic permit.
Statewide, Georgia requires a Level 3 soil report for new-construction permits. Gwinnett extends that to repairs and modifications as well. If your drainfield fails and you need a repair permit, you will need a soil classifier before GNR will process it. That’s an added cost and an added scheduling step most homeowners don’t anticipate.
It also frequently changes the outcome. On Gwinnett’s tight Piedmont clay, a soil report on an older property often shows that a conventional replacement is no longer permittable, pushing the project toward an engineered system or ATU at significantly higher cost.
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Gwinnett Septic Fees
| Service | Fee |
|---|---|
| Residential site evaluation, permit & initial inspection | $275 |
| Site evaluation/permit/inspection resulting from complaint | $400 |
| Commercial | $600 |
| Plat review (subdivision/exemption), per lot | $125 |
| Site evaluation for addition — Category 1 / Category 2 | $150 / $60 |
| Visual inspection | $125 |
| Reinspection — Category 1 / Category 2 | $175 / $100 |
| Pumper truck inspection | $100 |
| Installation without a permit | 2× standard fees |
These figures come from the most recent fee schedule GNR has published online, which dates to 2020. Fees may have changed since. Confirm current amounts with GNR Environmental Health at 770-963-5132 before budgeting.
Considering Sewer Instead?
Gwinnett is actively extending sewer service, and on Piedmont clay — where an engineered system costs materially more — connecting is sometimes the cheaper path.
Gwinnett’s residential septic-to-sewer conversion runs about $4,172 for a standard three-quarter-inch residential connection: a $4,147 System Development Charge plus a $25 permit. That’s separate from the cost of the lateral line from your house to the main.
Gwinnett County Department of Water Resources: 678-376-6700. Ask whether sewer is available at your address and whether extension is planned for your area.
Georgia Septic Guide — Free Tool
Could I Connect to Sewer Instead?
Atlanta’s fast-growing exurban counties are actively expanding sewer infrastructure. Before committing to a septic installation — especially an expensive ATU on Piedmont clay — it’s worth knowing whether sewer is already available or coming to your area.
This tool reflects general patterns in Atlanta’s growth counties and is not a substitute for checking directly with your county’s water/sewer authority. Sewer availability is ultimately determined by whether your specific address is within a served area, which the local utility can confirm definitively.
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Frequently Asked Questions
Who issues septic permits in Gwinnett County?
GNR Health, the combined district covering Gwinnett, Newton, and Rockdale. Environmental Health is at 455 Grayson Highway, Suite 600, Lawrenceville, 770-963-5132.
How much is a septic permit in Gwinnett County?
A residential site evaluation, permit, and initial inspection was $275 on the most recently published schedule (2020). Confirm current fees with GNR at 770-963-5132.
Does Gwinnett require a soil report for septic repairs?
Yes. Since February 7, 2022, GNR Health requires a Level 3 soil report for all septic permits, including repairs and modifications. Most Georgia counties require it only for new construction.
What happens if I install a septic system without a permit in Gwinnett?
GNR charges double the standard fees for installation without a permit.
How much does it cost to connect to sewer in Gwinnett County?
About $4,172 for a standard three-quarter-inch residential connection, comprising a $4,147 System Development Charge plus a $25 permit, not including the lateral line from the house.