The 50 largest wastewater treatment plants in Georgia
Ranked by average flow · 322 MGD combined · 89% of the state's reported flow
Augusta WWTP in Augusta is the largest publicly owned wastewater treatment plant in Georgia by reported average flow, treating about 33.2 million gallons per day. The 50 plants below treat 322 MGD between them, 89% of the flow reported by all 241 plants in the state, and serve about 2,161,710 people. Every plant links to its profile with permit, technology and compliance data.
| # | Facility | City | Avg flow (MGD) | Population | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|---|---|
| 1 | Augusta WWTP | Augusta | 33.2 | 172,073 | GA0037621 | May 2024 | Clarifiers, Biogas silos, Biogas balloons | 10 |
| 2 | Dekalb County Department Of Watershed Management (snapfinger Creek Awtf) | Decatur | 30.42 | 243,846 | GA0024147 | Mar 2029 | Clarifiers, Biogas silos, Biogas balloons | 1 |
| 3 | Pole Bridge Creek Advanced Wastewater Facility | Lithonia | 30.42 | 109,554 | GA0026816 | Mar 2029 | Clarifiers, Carrousels / oxidation ditches | 4 |
| 4 | South Columbus Water Resource Facility | Columbus | 27.02 | 212,000 | GA0020516 | Jun 2031 | Clarifiers, Biogas silos | 2 |
| 5 | South Cobb WRF | Mableton | 24.28 | 241,714 | GA0026158 | Jun 2027 | Clarifiers, Biogas silos | 3 |
| 6 | Macon Water Authority (rocky Creek Wrf) | Macon | 18.26 | 93,500 | GAIS01201 | May 2027 | Clarifiers, Aerated lagoons | 40 |
| 7 | Fulton County Department Of Public Works (big Creek Wrf) | Roswell | 16.8 | 86,640 | GA0024333 | Jul 2022 | — | 7 |
| 8 | Water Pollution Control- Joshua Street Plant | Albany | 14.26 | 69,691 | GA0037222 | Sep 2025 | Biogas silos | 3 |
| 9 | Lower Poplar Street Water Reclamation Facility | Macon | 11.58 | 83,739 | GAIS10060 | May 2027 | Clarifiers, Biogas silos | 14 |
| 10 | Fulton County - Johns Creek Environmental Campus | Alpharetta | 8.2 | 50,000 | GA0038831 | Dec 2029 | Aerated lagoons | 2 |
| 11 | Brunswick-Glynn County Joint Water & Sewer Commission (academy Creek Wpcp) | Brunswick | 7.52 | 36,795 | GA0025313 | Jun 2025 | Clarifiers | 140 |
| 12 | Athens-Clarke County (north Oconee Wrf) | Athens | 6.81 | 56,115 | GA0021725 | Jan 2031 | Clarifiers | 7 |
| 13 | Cobb County Water System (northwest Wrf) | Marietta | 5.9 | 18,001 | GA0046761 | Dec 2027 | Clarifiers, Aerated lagoons | 73 |
| 14 | City Of Valdosta | Valdosta | 5.15 | 49,188 | GA0033235 | Apr 2020 | Clarifiers | 16 |
| 15 | Calhoun (city Of) WPCP | Calhoun | 5 | 18,170 | GA0030333 | Aug 2028 | Clarifiers, Carrousels / oxidation ditches | 0 |
| 16 | Columbia County - Little River WPCP | Evans | 4.74 | 52,899 | GA0047775 | Jul 2028 | Clarifiers, Carrousels / oxidation ditches | 0 |
| 17 | Forsyth County Department Of Water And Sewer (fowler & Shakerag Wrf) | Suwanee | 4.11 | 12,672 | GA0038954 | Apr 2022 | — | 8 |
| 18 | Long Cane Creek Water Pollution Control Plant | Lagrange | 4.03 | 31,551 | GA0036951 | Oct 2028 | Clarifiers, Carrousels / oxidation ditches | 2 |
| 19 | City Of Cumming | Cumming | 3.6 | 43,318 | GA0046019 | Aug 2028 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 0 |
| 20 | Pooler, City Of (bloomingdale Regional Wpcp) | Pooler | 3.55 | — | GA0047066 | Jan 2027 | — | 25 |
| 21 | Douglas Southeast WPCP | Douglas | 3.4 | 13,570 | GA0024431 | Dec 2021 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 36 |
| 22 | Savannah Wilshire - Windsor WPCP | Savannah | 3.1 | 16,256 | GA0020443 | Aug 2031 | Clarifiers, Aerated lagoons, Uncovered lagoons | 0 |
| 23 | Savannah Crossroads WPCP | Savannah | 3.02 | 10,345 | GA0038326 | May 2024 | Clarifiers, Uncovered lagoons | 4 |
| 24 | Cornelia, City Of (cornelia Wpcp) | Cornelia | 2.75 | — | GA0021504 | Apr 2027 | Clarifiers | 12 |
| 25 | City Of Gainesville Linwood WWTP | Gainesville | 2.69 | 11,863 | GA0020168 | Jul 2022 | — | 3 |
| 26 | Dublin, City Of (dublin Wpcp) | Dublin | 2.67 | 18,829 | GA0025569 | May 2029 | Clarifiers, Biogas silos | 6 |
| 27 | Clayton County Water | Hampton | 2.62 | 36,500 | GA0038369 | Feb 2031 | Clarifiers, Uncovered lagoons | 0 |
| 28 | Canton, City Of (canton Wpcp) | Canton | 2.62 | 16,558 | GA0025674 | Sep 2025 | — | 89 |
| 29 | Saint Marys, City Of (point Peter Wpcp) | Saint Marys | 2.45 | 18,521 | GA0039047 | Apr 2024 | — | 3 |
| 30 | Fayetteville, City Of (whitewater Creek Wpcp) | Fayetteville | 2.33 | 18,427 | GA0035807 | Sep 2026 | Clarifiers, Aerated lagoons, Uncovered lagoons, Carrousels / oxidation ditches | 0 |
| 31 | Jesup, City Of (jesup Wpcp) | Jesup | 2.3 | 9,809 | GA0026000 | Mar 2030 | — | 6 |
| 32 | Douglasville-Douglas County Water & Sewerage Authority (sweetwater Creek Wpcp) | Douglasville | 2 | 43,903 | GA0047201 | Jan 2026 | Clarifiers, Carrousels / oxidation ditches | 14 |
| 33 | Monroe, City Of (jack'S Creek Wpcp) | Monroe | 1.9 | 15,264 | GA0047171 | Dec 2030 | Clarifiers, Biogas silos | 5 |
| 34 | Savannah, City Of (georgetown Wpcp) | Savannah | 1.81 | 8,867 | GA0046418 | Aug 2026 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 0 |
| 35 | Buford, City Of (southside Wpcp) | Buford | 1.63 | 14,790 | GA0023167 | Aug 2024 | Aerated lagoons | 29 |
| 36 | Cordele, City Of (gum Creek Wpcp) | Cordele | 1.57 | 21,882 | GA0024503 | Jul 2027 | Clarifiers, Aerated lagoons, Biogas silos | 24 |
| 37 | Henry County Water Authority - Indian Creek WRF | Mcdonough | 1.55 | 35,455 | GA0050241 | Apr 2027 | Uncovered lagoons | 5 |
| 38 | City Of Savannah - Travis Field WPCP | Savannah | 1.46 | 14,778 | GA0020427 | Apr 2024 | Clarifiers | 8 |
| 39 | Unified Government Of Athens-Clarke County (cedar Creek Wpcp) | Athens | 1.41 | 26,100 | GA0034584 | Jan 2031 | Uncovered lagoons | 0 |
| 40 | Fort Valley Utility Commission (lanter Wrf) | Fort Valley | 1.41 | 8,863 | GA0031046 | Aug 2027 | Clarifiers | 0 |
| 41 | Lafayette, City Of (lafayette Wpcp) | Lafayette | 1.36 | 7,302 | GA0025712 | Jun 2028 | Clarifiers, Aerated lagoons | 21 |
| 42 | Hinesville, City Of (jv Road Wrf) | Hinesville | 1.32 | 11,514 | GA0050301 | May 2026 | Uncovered lagoons | 1 |
| 43 | Chatsworth, City Of (judson Vick Wpcp) | Chatsworth | 1.31 | 22,350 | GA0032492 | Nov 2029 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 0 |
| 44 | Grovetown, City Of (grovetown Wpcp) | Grovetown | 1.31 | 15,152 | GA0050246 | Mar 2028 | Aerated lagoons, Uncovered lagoons | 12 |
| 45 | Dallas, City Of (pumpkinvine Creek Wpcp) | Dallas | 1.3 | 17,200 | GAIS13435 | May 2027 | Clarifiers, Aerated lagoons, Carrousels / oxidation ditches | 0 |
| 46 | Baxley, City Of (baxley Wpcp) | Baxley | 1.23 | 4,697 | GA0038725 | Oct 2026 | Aerated lagoons | 11 |
| 47 | Bainbridge WPCP | Bainbridge | 1.23 | 12,500 | GA0024678 | Feb 2024 | — | 1 |
| 48 | Summerville, City Of (summerville Wpcp) | Summerville | 1.2 | 4,435 | GA0025704 | Apr 2028 | Clarifiers, Aerated lagoons | 13 |
| 49 | Winder, City Of (cedar Creek Wpcp) | Winder | 1.2 | 18,338 | GA0038776 | Nov 2028 | Uncovered lagoons | 1 |
| 50 | Oconee County Calls Creek WPCP | Watkinsville | 1.16 | 6,176 | GA0050211 | Jun 2024 | Clarifiers, Carrousels / oxidation ditches | 0 |
Largest plants in Georgia: questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026.