North Dakota wastewater permits expiring in 2028
8 NPDES permits · 19 MGD combined average flow
8 publicly owned wastewater treatment plants in North Dakota hold NPDES permits that expire during 2028, issued by North Dakota Department of Environmental Quality. 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) |
|---|---|---|---|---|---|---|
| Williston City Of | Williston | 2.88 | ND0022349 | Mar 2028 | Uncovered lagoons | 4 |
| Devils Lake City Of | Devils Lake | — | ND0020681 | Mar 2028 | Uncovered lagoons | 77 |
| Hillsboro WTP | Hillsboro | — | ND0026115 | Mar 2028 | — | 27 |
| Bismarck City Of (potw) | Bismarck | 7.66 | ND0023434 | Jun 2028 | Uncovered lagoons, Biogas balloons | 0 |
| Beulah City Of | Beulah | — | ND0021211 | Jun 2028 | Aerated lagoons, Uncovered lagoons | 11 |
| City Of Sibley | Sibley | — | NDG123761 | Sep 2028 | Uncovered lagoons | 17 |
| Fairview Mt City Of | Fairview | — | NDG125356 | Sep 2028 | Uncovered lagoons | 7 |
| Grand Forks City Of | Grand Forks | 8.82 | ND0022888 | Dec 2028 | Uncovered lagoons | 7 |
North Dakota permit renewals in 2028: 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.