Clean Water Act discharge permit · NPDES MT0031453
WINIFRED DOMESTIC WWTF, Winifred, MT: NPDES MT0031453 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WINIFRED DOMESTIC WWTF, held by TOWN OF WINIFRED, holds NPDES permit MT0031453, which discharges to Dog Creek Via Unnamed Tributary. EPA’s file records it issued February 22, 2012 and expiring March 31, 2017. 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 | WINIFRED DOMESTIC WWTF |
|---|---|
| Permittee as filed | TOWN OF WINIFRED |
| NPDES ID | MT0031453 |
| 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 | February 22, 2012 |
| Expiration date | March 31, 2017 |
| Address | Winifred, MT 59489 |
| Receiving water | DOG CREEK VIA UNNAMED TRIBUTARY |
| Subwatershed | Dog Creek-Sig Larson Coulee (HUC 100401010504) |
| 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
- 18Pollutants on file
- 15Under a numeric limit
- 18With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 7 | 86 | 70 | May 31, 2026 | 99,999% over the limit |
| Solids, total suspended | 9 | 69 | 52 | May 31, 2026 | 1,662% over the limit |
| E. coli, MTEC-MF | 6 | 47 | 42 | May 31, 2026 | 120,535% over the limit |
| pH | 2 | 29 | 20 | July 31, 2011 | |
| Solids, suspended percent removal | 2 | 18 | 17 | May 31, 2026 | 2,240% over the limit |
| BOD, 5-day, percent removal | 2 | 17 | 16 | May 31, 2026 | 693% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 9 | 2 | March 31, 2017 | 383% over the limit |
| Temperature, water deg. centigrade | 2 | 13 | 0 | ||
| Flow rate | 0 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 5 | 0 | ||
| Nitrogen, total [as N] | 2 | 3 | 0 | ||
| Chlorine, total residual | 4 | 2 | 0 | ||
| Flow rate | 2 | 2 | 0 | ||
| Phosphorus, total [as P] | 2 | 2 | 0 | ||
| Oil and grease, hexane extr method | 1 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 1 | 0 | ||
| Algae, presence | 0 | 1 | 0 | ||
| Solids, total dissolved [TDS] | 0 | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 17, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| February 17, 2022 | Monitoring Violations - Analysis not Conducted | ST6 |
| February 17, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 17, 2022 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| March 21, 2017 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| March 21, 2017 | Management Practice Violations - Failure to Maintain Records | ST6 |
| March 21, 2017 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 21, 2017 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
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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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 MT0031453 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.