Clean Water Act discharge permit · NPDES MN0061336
PRAIRIE ISLAND, Welch, MN: NPDES MN0061336 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 38Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
PRAIRIE ISLAND, held by PRAIRIE ISLAND COMMUNITY WWSL, holds NPDES permit MN0061336, which discharges to Sturgeon Lake. EPA’s file records it issued July 25, 2016 and expiring July 17, 2021. 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 | PRAIRIE ISLAND |
|---|---|
| Permittee as filed | PRAIRIE ISLAND COMMUNITY WWSL |
| NPDES ID | MN0061336 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 25, 2016 |
| Expiration date | July 17, 2021 |
| Address | Welch, MN 55089 |
| Receiving water | STURGEON LAKE |
| Subwatershed | Town of Brandt-Cobb Creek (HUC 070200030401) |
| Other EPA IDs (FRS) | RCRA handler MNR000063776 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 39Pollutants on file
- 38Under a numeric limit
- 39With a violation of any kind
- 10With 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, suspended percent removal | 6 | 56 | 50 | June 30, 2026 | 561% over the limit |
| Chlorine, total residual | 6 | 36 | 31 | October 31, 2017 | 1,137% over the limit |
| Phosphorus, total [as P] | 22 | 36 | 21 | June 30, 2024 | 176% over the limit |
| E. coli | 11 | 29 | 19 | September 30, 2023 | 3,687% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 0 | 24 | 13 | April 30, 2010 | 79,900% over the limit |
| Solids, total suspended | 32 | 47 | 7 | May 31, 2025 | 100% over the limit |
| pH | 20 | 32 | 6 | May 31, 2025 | |
| Oxygen, dissolved [DO] | 6 | 10 | 3 | July 31, 2025 | 27% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 6 | 9 | 3 | January 31, 2009 | 555% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 32 | 51 | 1 | May 31, 2005 | 2% over the limit |
| Flow, in conduit or thru treatment plant | 12 | 28 | 0 | ||
| Nitrogen, ammonia total [as N] | 15 | 22 | 0 | ||
| Arsenic, dry weight | 3 | 3 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Nitrogen, total [as N] | 8 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 8 | 2 | 0 | ||
| Nitrite + Nitrate total [as N] | 8 | 2 | 0 | ||
| Copper, total recoverable | 4 | 2 | 0 | ||
| Mercury, total [as Hg] | 4 | 2 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 2 | 2 | 0 | ||
| Outfall observation,visual, y/n response | 5 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 1 | 0 | ||
| Ann. amt sludge disposed by other method | 1 | 1 | 0 | ||
| Annual amt of sludge incinerated | 1 | 1 | 0 | ||
| Annual sludge production, total | 1 | 1 | 0 | ||
| Annual amount of sludge land applied | 1 | 1 | 0 | ||
| Annual amt. sludge disposed surface unit | 1 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 1 | 1 | 0 | ||
| Annual amt sludge transported interstate | 1 | 1 | 0 | ||
| Pollutant table from 503.13 | 1 | 1 | 0 | ||
| Level of pathogen requirements achieved | 1 | 1 | 0 | ||
| Description of pathogen option used | 1 | 1 | 0 | ||
| Vector attraction reduction alternative used | 1 | 1 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 10, 2026 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | EP6 |
| March 10, 2026 | Reporting Violations - Improper/ Incorrect Reporting | EP6 |
| March 10, 2026 | Effluent Violations - Numeric effluent violation | EP6 |
| March 10, 2026 | Reporting Violations - Failure to Submit DMRs | EP6 |
| September 19, 2017 | Effluent Violations - Narrative Effluent Violation | EP6 |
| September 19, 2017 | Management Practice Violations - Improper Operation and Maintenance | EP6 |
| September 19, 2017 | Management Practice Violations - Failure to Maintain Records | EP6 |
| September 19, 2017 | Monitoring Violations - Invalid/Unrepresentative Sample | EP6 |
| September 19, 2017 | Reporting Violations - Improper/ Incorrect Reporting | 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.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.