12 NPDES permits · 2 MGD combined average flow
12 publicly owned wastewater treatment plants in Alaska hold NPDES permits that expire during 2027, issued by Alaska Department of Environmental Conservation. The table lists each plant with its permit number, expiry month, average flow, treatment technology and three-year violation count, in order of expiry.
An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.
| Facility | City | Avg flow (MGD) | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|
| Homer Public Works Department And WWTP | Homer | 0.38 | AK0021245 | Jan 2027 | — | 8 |
| Spring Creek Correctional Center | Seward | 0.09 | AK0053724 | Apr 2027 | — | 67 |
| Lowell Point WWTP | Seward | 0.58 | AK0021890 | Sep 2027 | Aerated lagoons | 17 |
| Mountain Point Wastewater Treatment Plant | Ketchikan | 0.55 | AKG572028 | Dec 2027 | — | 21 |
| Thorne Bay WWTF | Thorne Bay | 0.27 | AKG572045 | Dec 2027 | — | 246 |
| Auke Bay Wastewater Treatment Facility | Juneau | 0.08 | AKG572004 | Dec 2027 | — | 12 |
| Nenana WWTF | Nenana | 0.06 | AKG572031 | Dec 2027 | — | 91 |
| Nuiqsut WWTF | Nuiqsut | 0.02 | AKG572033 | Dec 2027 | — | 34 |
| Atqasuk WWTF | Atqasuk | 0.01 | AKG572001 | Dec 2027 | — | 84 |
| Point Lay WWTF | Point Lay | 0.01 | AKG572036 | Dec 2027 | — | 139 |
| Kisimgiugtuq School Wastewater Treatment Facility | Kivalina | 0.0035 | AKG572130 | Dec 2027 | — | 371 |
| Mcneil Canyon Elementary School | Homer | 0.00038 | AKG572027 | Dec 2027 | — | 6 |
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.