The 50 largest wastewater treatment plants in Georgia
Ranked by average flow · 260 MGD combined · 86% of the state's reported flow
Gwinnett County Board Of Commissioners (f. Wayne Hill Wrc) in Buford is the largest publicly owned wastewater treatment plant in Georgia by reported average flow, treating about 36.74 million gallons per day. The 50 plants below treat 260 MGD between them, 86% of the flow reported by all 256 plants in the state, and serve about 1,664,044 people. Every plant links to its profile with permit and compliance data. Treatment technology is shown with a free Klarifi account.
| # | Facility | City | Avg flow (MGD) | Population | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|---|
| 1 | Gwinnett County Board Of Commissioners (f. Wayne Hill Wrc) | Buford | 36.74 | — | GA0038130 | Dec 2026 | 0 |
| 2 | Dekalb County Department Of Watershed Management (snapfinger Creek Awtf) | Decatur | 28.92 | 243,846 | GA0024147 | Mar 2029 | 1 |
| 3 | Pole Bridge Creek Advanced Wastewater Facility | Lithonia | 28.92 | 109,554 | GA0026816 | Mar 2029 | 4 |
| 4 | South Cobb WRF | Mableton | 26.31 | 241,714 | GA0026158 | Jun 2027 | 3 |
| 5 | Lower Poplar Street Water Reclamation Facility | Macon | 12.68 | 83,739 | GAIS10060 | May 2027 | 14 |
| 6 | Gainesville, City Of (flat Creek Wrf) | Gainesville | 9.44 | 39,715 | GA0021156 | Nov 2022 | 49 |
| 7 | Brunswick-Glynn County Joint Water & Sewer Commission (academy Creek Wpcp) | Brunswick | 6.9 | 36,795 | GA0025313 | Jun 2025 | 141 |
| 8 | Cobb County Water System (northwest Wrf) | Marietta | 6.46 | 18,001 | GA0046761 | Dec 2027 | 74 |
| 9 | City Of Valdosta | Valdosta | 4.81 | 49,188 | GA0033235 | Apr 2020 | 17 |
| 10 | Tifton Regional Wastewater Complex | Tifton | 4.69 | 17,235 | GA0048470 | Jan 2031 | 21 |
| 11 | Long Cane Creek Water Pollution Control Plant | Lagrange | 4.54 | 31,551 | GA0036951 | Oct 2028 | 2 |
| 12 | Douglas Southeast WPCP | Douglas | 4.45 | 13,570 | GA0024431 | Dec 2021 | 29 |
| 13 | Clayton County Water Authority (northeast Wrf) | Rex | 4.19 | 49,300 | GA0020575 | Mar 2031 | 0 |
| 14 | Forsyth County Department Of Water And Sewer (fowler & Shakerag Wrf) | Suwanee | 4.14 | 12,672 | GA0038954 | Sep 2031 | 8 |
| 15 | Quigg Branch Water Pollution Control Plant | Conyers | 4.01 | 47,850 | GA0047678 | Nov 2029 | 0 |
| 16 | Barnesville, City Of (james A. King Wwtf) | Barnesville | 3.63 | 7,068 | GA0021041 | Nov 2030 | 8 |
| 17 | City Of Cumming | Cumming | 3.59 | 43,318 | GA0046019 | Aug 2028 | 0 |
| 18 | Pooler, City Of (bloomingdale Regional Wpcp) | Pooler | 3.35 | — | GA0047066 | Jan 2027 | 25 |
| 19 | Upper Oconee Basin Water Authority (bear Creek Water Treatment & Transmission) | Bogart | 3.32 | — | GAG640048 | Dec 2030 | 0 |
| 20 | Reed Creek WPCP | Martinez | 3.24 | 34,933 | GA0031992 | Mar 2031 | 4 |
| 21 | Dublin, City Of (dublin Wpcp) | Dublin | 3.12 | 18,829 | GA0025569 | May 2029 | 6 |
| 22 | Douglasville, City Of (south Central Wpcp) | Douglasville | 2.97 | 86,342 | GA0038709 | Jan 2026 | 6 |
| 23 | Canton, City Of (canton Wpcp) | Canton | 2.95 | 16,558 | GA0025674 | Sep 2025 | 85 |
| 24 | Douglasville-Douglas County Water & Sewerage Authority (sweetwater Creek Wpcp) | Douglasville | 2.85 | 43,903 | GA0047201 | Jan 2026 | 14 |
| 25 | Rose Creek WPCP | Woodstock | 2.68 | 34,320 | GA0046451 | Jan 2026 | 0 |
| 26 | Clayton County Water | Hampton | 2.58 | 36,500 | GA0038369 | Feb 2031 | 0 |
| 27 | Savannah Wilshire - Windsor WPCP | Savannah | 2.54 | 16,256 | GA0020443 | Aug 2031 | 0 |
| 28 | Fayetteville, City Of (whitewater Creek Wpcp) | Fayetteville | 2.38 | 18,427 | GA0035807 | Sep 2026 | 0 |
| 29 | Saint Marys, City Of (point Peter Wpcp) | Saint Marys | 2.36 | 18,521 | GA0039047 | Apr 2024 | 4 |
| 30 | Cordele, City Of (gum Creek Wpcp) | Cordele | 2.11 | 21,882 | GA0024503 | Jul 2027 | 24 |
| 31 | Monroe, City Of (jack'S Creek Wpcp) | Monroe | 1.92 | 15,264 | GA0047171 | Dec 2030 | 5 |
| 32 | Savannah, City Of (georgetown Wpcp) | Savannah | 1.85 | 8,867 | GA0046418 | Aug 2026 | 0 |
| 33 | Water Pollution Control Plant | Milledgeville | 1.82 | 4,660 | GA0030775 | Jul 2029 | 0 |
| 34 | Lafayette, City Of (lafayette Wpcp) | Lafayette | 1.81 | 7,302 | GA0025712 | Jun 2028 | 21 |
| 35 | City Of Cedartown | Cedartown | 1.75 | 11,604 | GA0024074 | Sep 2026 | 90 |
| 36 | Buford, City Of (southside Wpcp) | Buford | 1.69 | 14,790 | GA0023167 | Aug 2024 | 29 |
| 37 | Henry County Water Authority - Indian Creek WRF | Mcdonough | 1.61 | 35,455 | GA0050241 | Apr 2027 | 5 |
| 38 | Coweta County Water & Sewerage Authority (shenandoah Wpcp) | Newnan | 1.5 | 15,902 | GA0038822 | Jun 2028 | 87 |
| 39 | Unified Government Of Athens-Clarke County (cedar Creek Wpcp) | Athens | 1.48 | 26,100 | GA0034584 | Jan 2031 | 0 |
| 40 | Jesup, City Of (jesup Wpcp) | Jesup | 1.46 | 9,809 | GA0026000 | Mar 2030 | 6 |
| 41 | City Of Savannah - Travis Field WPCP | Savannah | 1.28 | 14,778 | GA0020427 | Apr 2024 | 8 |
| 42 | Summerville, City Of (summerville Wpcp) | Summerville | 1.28 | 4,435 | GA0025704 | Apr 2028 | 13 |
| 43 | Loganville, City Of (big Flat Creek Wpcp) | Loganville | 1.23 | 14,127 | GA0020788 | Jan 2029 | 5 |
| 44 | Braselton, Town Of (braselton Wrf) | Braselton | 1.22 | 15,726 | GA0038857 | Oct 2030 | 21 |
| 45 | Chatsworth, City Of (judson Vick Wpcp) | Chatsworth | 1.21 | 22,350 | GA0032492 | Nov 2029 | 0 |
| 46 | Bainbridge WPCP | Bainbridge | 1.21 | 12,500 | GA0024678 | Feb 2024 | 1 |
| 47 | City Of Blakely | Blakely | 1.2 | 6,890 | GA0025585 | Aug 2024 | 54 |
| 48 | Fort Valley Utility Commission (lanter Wrf) | Fort Valley | 1.2 | 8,863 | GA0031046 | Aug 2027 | 0 |
| 49 | Winder, City Of (cedar Creek Wpcp) | Winder | 1.19 | 18,338 | GA0038776 | Nov 2028 | 1 |
| 50 | Baxley, City Of (baxley Wpcp) | Baxley | 1.17 | 4,697 | GA0038725 | Oct 2026 | 11 |
Treatment technology for each plant is shown with a free Klarifi account. Create one →
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 October 26, 2026.
Wastewater terms: WWTP · POTW · MGD · NPDES permit · Biological nutrient removal · Tertiary treatment · all terms
Cite this page
Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.
Klarifi. “The 50 largest wastewater treatment plants in Georgia (2026).” Updated October 26, 2026. https://klarifi.io/facilities/georgia/largestNeed a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.