Anaerobic digesters and biogas: wastewater treatment plants in Tennessee
15 plants · 7% of the state · 104 MGD reported by 14 plants
Klarifi identifies 15 publicly owned wastewater treatment plants with anaerobic digesters and biogas in Tennessee, 7% of the 227 plants in the state (104 MGD reported by 14 plants). The largest is Moccasin Bend Wastewater Treatment Plant in Chattanooga at 36.67 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 Tennessee
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | Moccasin Bend Wastewater Treatment Plant | Chattanooga | 36.67 | TNR053775 | Jun 2030 | 53 |
| 2 | Whites Creek Wastewater Treatment Plant | Nashville | 21.51 | TN0024970 | Oct 2025 | 39 |
| 3 | Nashville Dry Creek STP | Madison | 12.69 | TN0020648 | Oct 2025 | 34 |
| 4 | Kingsport STP | Kingsport | 8.68 | TN0020095 | Dec 2028 | 36 |
| 5 | City Of Franklin Wastewater Treatment Plant | Franklin | 7.12 | TN0028827 | Dec 2026 | 44 |
| 6 | Turkey Creek WWTP (morristown Stp) | Morristown | 4.87 | TN0023507 | Oct 2029 | 22 |
| 7 | Collierville Northwest STP | Collierville | 3.38 | TN0078841 | Jan 2028 | 3 |
| 8 | Gatlinburg STP | Gatlinburg | 2.24 | TN0020117 | Aug 2030 | 17 |
| 9 | Lewisburg STP | Lewisburg | 2.1 | TN0022888 | May 2028 | 24 |
| 10 | Clinton WWTP #1 | Clinton | 1.72 | TN0026506 | May 2028 | 0 |
| 11 | Lenoir City STP | Lenoir City | 1.43 | TN0020494 | Jul 2031 | 11 |
| 12 | Brownsville STP | Brownsville | 0.52 | TN0062367 | Jun 2029 | 11 |
| 13 | Tellico Area Services System - Niles Ferry STP | Vonore | 0.5 | TN0058238 | Oct 2028 | 2 |
| 14 | Alamo STP | Alamo | 0.23 | TN0024988 | Jul 2027 | 174 |
| 15 | Erwin Utilities Authority | Erwin | — | TN0023001 | Jan 2025 | 2 |
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 Tennessee
Anaerobic digesters and biogas in other states
Anaerobic digesters and biogas in Tennessee: 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.