Clean Water Act discharge permit · NPDES MT0020702
WINNETT WWTF, Winnett, MT: NPDES MT0020702 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
WINNETT WWTF, held by TOWN OF WINNETT, holds NPDES permit MT0020702, which discharges to Mcdonald Creek. EPA’s file records it issued September 7, 2005 and expiring September 30, 2010. 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 | WINNETT WWTF |
|---|---|
| Permittee as filed | TOWN OF WINNETT |
| NPDES ID | MT0020702 |
| 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 | September 7, 2005 |
| Expiration date | September 30, 2010 |
| Issuing agency | MONTANA DEQ |
| Address | Winnett, MT 59087 |
| Receiving water | MCDONALD CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | McDonald Creek-Winnett (HUC 100402040604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 14Under a numeric limit
- 18With a violation of any kind
- 8With 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 | 45 | 35 | April 30, 2017 | 4,188% over the limit |
| E. coli, MTEC-MF | 0 | 17 | 15 | March 31, 2018 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 9 | 38 | 11 | March 31, 2009 | 611% over the limit |
| Solids, total suspended | 9 | 33 | 6 | April 30, 2017 | 167% over the limit |
| pH | 4 | 12 | 2 | April 30, 2016 | |
| Phosphorus, total [as P] | 2 | 38 | 1 | December 31, 2003 | 85% over the limit |
| Coliform, fecal general | 9 | 8 | 1 | September 30, 2000 | 15% over the limit |
| Solids, suspended percent removal | 0 | 3 | 1 | March 31, 2015 | 358% over the limit |
| Nitrogen, total [as N] | 2 | 41 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 17 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 17 | 0 | ||
| Flow rate | 0 | 7 | 0 | ||
| Chlorine, total residual | 4 | 4 | 0 | ||
| Flow rate | 2 | 4 | 0 | ||
| Oil and grease, hexane extr method | 1 | 4 | 0 | ||
| Temperature, water deg. centigrade | 1 | 2 | 0 | ||
| BOD, 5-day, percent removal | 0 | 2 | 0 | ||
| Oil and grease visual | 0 | 1 | 0 | ||
| Duration of discharge | 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 MT0020702.
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 MT0020702 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.