Clean Water Act discharge permit · NPDES MNG585217
SOBIESKI WWTP, Swan River, MN: NPDES MNG585217 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
SOBIESKI WWTP, held by Sobieski city of, holds NPDES permit MNG585217. EPA’s file records it issued January 1, 2020 and expiring November 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOBIESKI WWTP |
|---|---|
| Permittee as filed | Sobieski city of |
| NPDES ID | MNG585217 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2020 |
| Expiration date | November 30, 2023 |
| Issuing agency | STA |
| Address | Swan River, MN 55784 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Swan River (HUC 070101040805) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 6With a violation of any kind
- 2With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 5 | 6 | 6 | May 31, 2026 | 46% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 1 | 1 | October 31, 2024 | 140% over the limit |
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Nitrogen, total [as N] | 2 | 3 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 9 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 5 | 0 | 0 | ||
| pH | 3 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585217.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 4, 2026 | Evaluation | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| August 19, 2026 | Letter of Violation/ Warning Letter | State |
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MNG585217.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MNG585217 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.