Clean Water Act discharge permit · NPDES MT0020516
WIBAUX WWTP, Wibaux, MT: NPDES MT0020516 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
WIBAUX WWTP, held by TOWN OF WIBAUX, holds NPDES permit MT0020516, which discharges to Beaver Creek. EPA’s file records it issued April 30, 2012 and expiring May 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 | WIBAUX WWTP |
|---|---|
| Permittee as filed | TOWN OF WIBAUX |
| NPDES ID | MT0020516 |
| 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 | April 30, 2012 |
| Expiration date | May 31, 2017 |
| Issuing agency | MONTANA DEQ |
| Address | Wibaux, MT 59353 |
| Receiving water | BEAVER CREEK |
| Subwatershed | Beaver Creek-Wibaux (HUC 101102040207) |
| 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
- 22Pollutants on file
- 17Under a numeric limit
- 22With a violation of any kind
- 9With 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 | 9 | 239 | 98 | June 30, 2023 | 1,085% over the limit |
| Solids, total suspended | 9 | 206 | 68 | June 30, 2023 | 2,553% over the limit |
| BOD, 5-day, percent removal | 1 | 76 | 42 | June 30, 2023 | 558% over the limit |
| pH | 5 | 84 | 13 | June 30, 2023 | |
| E. coli, MTEC-MF | 4 | 70 | 12 | May 31, 2023 | 8,630% over the limit |
| Nitrogen, ammonia total [as N] | 5 | 106 | 11 | April 30, 2017 | 387% over the limit |
| Solids, suspended percent removal | 1 | 46 | 11 | June 30, 2023 | 380% over the limit |
| Coliform, fecal general | 8 | 27 | 9 | May 31, 2010 | 99,999% over the limit |
| Chlorine, total residual | 2 | 72 | 1 | October 31, 2010 | 400% over the limit |
| Nitrogen, total [as N] | 2 | 66 | 0 | ||
| Phosphorus, total [as P] | 2 | 66 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 39 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 38 | 0 | ||
| Temperature, water deg. centigrade | 3 | 37 | 0 | ||
| Flow rate | 0 | 36 | 0 | ||
| Flow rate | 2 | 27 | 0 | ||
| Oil & Grease | 0 | 18 | 0 | ||
| Duration | 0 | 18 | 0 | ||
| Oil and grease visual | 0 | 18 | 0 | ||
| Duration of discharge | 1 | 11 | 0 | ||
| Oil and grease, hexane extr method | 1 | 2 | 0 | ||
| Temperature, water deg. fahrenheit | 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
- 16Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 12, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| September 12, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 12, 2024 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| August 6, 2020 | Monitoring Violations - Analysis not Conducted | ST6 |
| August 6, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| August 6, 2020 | Management Practice Violations - Failure to Maintain Records | ST6 |
| August 6, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 6, 2020 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| August 6, 2020 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| August 6, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 16, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| January 16, 2019 | Monitoring Violations - Analysis not Conducted | ST6 |
| January 16, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| January 16, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 16, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 16, 2019 | Management Practice Violations - Failure to Maintain Records | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.