Clean Water Act discharge permit · NPDES MN0025887
GRAND PORTAGE WASTEWATER STABILIZATION LAGOON, Grand Portage, MN: NPDES MN0025887 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
GRAND PORTAGE WASTEWATER STABILIZATION LAGOON, held by GRAND PORTAGE RESERVATION WWSL, holds NPDES permit MN0025887, which discharges to Baptism-Brule. EPA’s file records it issued July 24, 2017 and expiring July 17, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GRAND PORTAGE WASTEWATER STABILIZATION LAGOON |
|---|---|
| Permittee as filed | GRAND PORTAGE RESERVATION WWSL |
| NPDES ID | MN0025887 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 24, 2017 |
| Expiration date | July 17, 2022 |
| Address | Grand Portage, MN 55605 |
| Receiving water | BAPTISM-BRULE |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town of Grand Portage-Frontal Lake Superior (HUC 040101010301) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 13Under a numeric limit
- 14With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 5 | 413 | 64 | November 30, 2024 | 10,400% over the limit |
| Solids, total suspended | 5 | 370 | 19 | November 30, 2024 | 335% over the limit |
| Solids, suspended percent removal | 1 | 92 | 11 | November 30, 2024 | 640% over the limit |
| E. coli | 2 | 168 | 7 | November 30, 2022 | 930% over the limit |
| pH | 4 | 211 | 4 | May 31, 2024 | |
| Carbonaceous oxygen demand, % removal | 1 | 86 | 4 | November 30, 2023 | 561% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 5 | 355 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 236 | 0 | ||
| Mercury, total [as Hg] | 3 | 151 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 84 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 83 | 0 | ||
| Rainfall | 1 | 78 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 43 | 0 | ||
| Coliform, fecal general | 0 | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 19, 2021 | Management Practice Violations - No Licensed/Certified Operator | EP6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
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
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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 MN0025887 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.