Clean Water Act discharge permit · NPDES MN0021571
WINSTED WWTP, Winsted, MN: NPDES MN0021571 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 26Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
WINSTED WWTP, held by Winsted city of, holds NPDES permit MN0021571. EPA’s file records it issued October 1, 2018 and expiring March 31, 2021. 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 | WINSTED WWTP |
|---|---|
| Permittee as filed | Winsted city of |
| NPDES ID | MN0021571 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 1, 2018 |
| Expiration date | March 31, 2021 |
| Issuing agency | STA |
| Address | Winsted, MN 55395 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Judicial Ditch No 1 (HUC 070102050306) |
| 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
- 26Pollutants on file
- 26Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 1 | 7 | 7 | June 30, 2025 | 370% over the limit |
| pH | 6 | 5 | 3 | June 30, 2023 | |
| Solids, total suspended | 8 | 7 | 2 | May 31, 2024 | 44% over the limit |
| Oxygen, dissolved [DO] | 1 | 2 | 2 | May 31, 2026 | 7% over the limit |
| Phosphorus, total [as P] | 3 | 1 | 1 | September 30, 2020 | 5% over the limit |
| Solids, suspended percent removal | 1 | 1 | 1 | April 30, 2024 | 13% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 2 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 1 | 0 | ||
| Mercury, total [as Hg] | 1 | 1 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Specific conductance | 1 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Bicarbonate ion- [as HCO3] | 1 | 0 | 0 | ||
| Calcium, total [as Ca] | 1 | 0 | 0 | ||
| Magnesium, total [as Mg] | 1 | 0 | 0 | ||
| Sodium, total [as Na] | 1 | 0 | 0 | ||
| Potassium, total [as K] | 1 | 0 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 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 MN0021571.
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 MN0021571 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.