Anaerobic digesters and biogas: wastewater treatment plants in Georgia
17 plants · 7% of the state · 152 MGD combined
Klarifi identifies 17 publicly owned wastewater treatment plants with anaerobic digesters and biogas in Georgia, 7% of the 241 plants in the state (152 MGD combined). The largest is Augusta WWTP in Augusta at 33.2 MGD.
Anaerobic digesters stabilise sludge in sealed heated tanks and produce biogas, visible from the air as digester silos and gas holders. Plants with digesters are typically above 5 MGD and are the buyers of mixing, heating, gas handling, cogeneration and dewatering equipment.
The largest plants with anaerobic digesters in Georgia
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Augusta WWTP | Augusta | 33.2 | GA0037621 | May 2024 | 10 |
| 2 | Dekalb County Department Of Watershed Management (snapfinger Creek Awtf) | Decatur | 30.42 | GA0024147 | Mar 2029 | 1 |
| 3 | South Columbus Water Resource Facility | Columbus | 27.02 | GA0020516 | Jun 2031 | 2 |
| 4 | South Cobb WRF | Mableton | 24.28 | GA0026158 | Jun 2027 | 3 |
| 5 | Water Pollution Control- Joshua Street Plant | Albany | 14.26 | GA0037222 | Sep 2025 | 3 |
| 6 | Lower Poplar Street Water Reclamation Facility | Macon | 11.58 | GAIS10060 | May 2027 | 14 |
| 7 | Dublin, City Of (dublin Wpcp) | Dublin | 2.67 | GA0025569 | May 2029 | 6 |
| 8 | Monroe, City Of (jack'S Creek Wpcp) | Monroe | 1.9 | GA0047171 | Dec 2030 | 5 |
| 9 | Cordele, City Of (gum Creek Wpcp) | Cordele | 1.57 | GA0024503 | Jul 2027 | 24 |
| 10 | Bainbridge WPCP | Bainbridge | 1.23 | GA0024678 | Feb 2024 | 1 |
| 11 | Braselton, Town Of (braselton Wrf) | Braselton | 1.12 | GA0038857 | Oct 2030 | 21 |
| 12 | City Of Griffin-Potato Cr | Griffin | 0.98 | GA0030791 | Oct 2024 | 9 |
| 13 | City Of Blakely | Blakely | 0.95 | GA0025585 | Aug 2024 | 47 |
| 14 | Jekyll Island State Park Authority (jekyll Island Wpcp) | Jekyll Island | 0.5 | GA0020508 | Nov 2026 | 3 |
| 15 | Blue Ridge, City Of (blue Ridge Wpcp) | Blue Ridge | 0.32 | GA0037583 | Nov 2025 | 25 |
| 16 | Moody Afb | Moody Afb | 0.29 | GA0020001 | Nov 2028 | 3 |
| 17 | Columbia County Water Utility (harlem WPCP - 0.25 Mgd) | Harlem | 0.21 | GA0020389 | Apr 2024 | 6 |
Plants planning anaerobic digesters and biogas upgrades
These plants report anaerobic digesters and biogas as a planned process in the EPA Clean Watersheds Needs Survey: the earliest public signal of a project.
| Facility | City | Avg flow (MGD) | NPDES permit | Expires |
|---|---|---|---|---|
| Athens-Clarke County (north Oconee Wrf) | Athens | 6.81 | GA0021725 | Jan 2031 |
Contacts and project signals for every plant on this list
Klarifi adds verified decision-maker contacts, permit limits, discharge monitoring data and the capital projects planned in each city, filterable by technology, size and compliance record.
Other technologies in Georgia
Anaerobic digesters and biogas in other states
Anaerobic digesters and biogas 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.