Anaerobic digesters and biogas: wastewater treatment plants in Michigan
96 plants · 31% of the state · 332 MGD reported by 95 plants
Klarifi identifies 96 publicly owned wastewater treatment plants with anaerobic digesters and biogas in Michigan, 31% of the 305 plants in the state (332 MGD reported by 95 plants). The largest is City Of Grand Rapids Wastewater Treatment Plant in Grand Rapids at 33.4 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 Michigan
| # | Facility | City | Avg flow (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| 1 | City Of Grand Rapids Wastewater Treatment Plant | Grand Rapids | 33.4 | MI0026069 | Oct 2029 | 9 |
| 2 | Wyandotte Wastewater Plant | Wyandotte | 26.9 | MI0021156 | Oct 2021 | 5 |
| 3 | Kalamazoo Water Reclamation Plant | Kalamazoo | 24.94 | MI0023299 | Oct 2025 | 37 |
| 4 | Ycua Regional Wastewater Treatment Plant | Ypsilanti | 23.05 | MIL042676 | Dec 2030 | 5 |
| 5 | Anthony Ragnone Wastewater Treatment Plant | Montrose | 23.04 | MI0022977 | Oct 2023 | 3 |
| 6 | Southgate-Wyandotte Cso Rtf | Wyandotte | 16.88 | MI0036072 | Oct 2026 | 2 |
| 7 | City Of Wyoming Clean Water Plant | Grandville | 14.38 | MI0024392 | Oct 2030 | 74 |
| 8 | Ann Arbor WWTP | Ann Arbor | 13.6 | MI0022217 | Oct 2025 | 9 |
| 9 | Clinton River WRRF | Pontiac | 10.99 | MI0023825 | Oct 2025 | 3 |
| 10 | Jackson WWTP | Jackson | 10.52 | MI0023256 | Oct 2027 | 41 |
| 11 | East Lansing Wastewater Treatment Plant | East Lansing | 9.13 | MI0022853 | Oct 2027 | 1 |
| 12 | Holland WWTP | Holland | 8.7 | MI0023108 | Oct 2028 | 0 |
| 13 | Battle Creek WWTP | Battle Creek | 7.55 | MI0022276 | Oct 2030 | 9 |
| 14 | Bay City Wastewater Treatment Plant | Bay City | 6.6 | MI0022284 | Oct 2015 | 25 |
| 15 | City Of Port Huron Wastewater Treatment Plant | Port Huron | 6.03 | MI0023833 | Oct 2027 | 4 |
| 16 | Traverse City WWTP | Traverse City | 4.33 | MI0027481 | Oct 2029 | 2 |
| 17 | West Bay County Department Of Water/sewer | Bay City | 4 | MI0042439 | Oct 2023 | 2 |
| 18 | Delta Twp WWTP | Lansing | 3.87 | MI0022799 | Oct 2027 | 4 |
| 19 | Saginaw Twp WWTP | Saginaw | 3.24 | MI0023973 | Oct 2028 | 10 |
| 20 | Cbpu Waste Water Treatment Plant | Coldwater | 3.2 | MI0020117 | Oct 2026 | 9 |
| 21 | Niles WWTP | Niles | 3.2 | MI0023701 | Oct 2017 | 0 |
| 22 | City Of Mount Clemens Wastewater Treatment Plant | Mount Clemens | 3.06 | MI0023647 | Oct 2025 | 6 |
| 23 | Adrian WWTP | Adrian | 2.88 | MI0022152 | Oct 2028 | 0 |
| 24 | Grand Haven/spring Lake Wastewater Treatment Plant | Grand Haven | 2.82 | MI0021245 | Oct 2025 | 1 |
| 25 | Bedford Twp WWTP | Erie | 2.68 | MI0020761 | Sep 2029 | 16 |
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 Michigan
Anaerobic digesters and biogas in other states
Anaerobic digesters and biogas in Michigan: 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.