Clean Water Act discharge permit · NPDES MT0031712
WOLF CREEK WWTF, Wolf Creek, MT: NPDES MT0031712 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 17Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
WOLF CREEK WWTF, held by WOLF CREEK COUNTY WATER SEWER DIST, holds NPDES permit MT0031712, which discharges to Little Prickly Pear Creek. EPA’s file records it issued September 20, 2011 and expiring October 31, 2016. 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 | WOLF CREEK WWTF |
|---|---|
| Permittee as filed | WOLF CREEK COUNTY WATER SEWER DIST |
| NPDES ID | MT0031712 |
| 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 20, 2011 |
| Expiration date | October 31, 2016 |
| Address | Wolf Creek, MT 59648 |
| Receiving water | LITTLE PRICKLY PEAR CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Little Prickley Pear Creek-Log Gulch (HUC 100301011906) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 17Under a numeric limit
- 17With a violation of any kind
- 1With 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 | 12 | 19 | 1 | December 31, 2014 | 18% over the limit |
| Solids, total suspended | 12 | 18 | 0 | ||
| Temperature, water deg. fahrenheit | 4 | 6 | 0 | ||
| Flow rate | 4 | 6 | 0 | ||
| pH | 4 | 6 | 0 | ||
| Lead, total recoverable | 3 | 3 | 0 | ||
| Copper, total recoverable | 3 | 3 | 0 | ||
| BOD, 5-day, percent removal | 2 | 3 | 0 | ||
| Solids, suspended percent removal | 2 | 3 | 0 | ||
| Nitrogen, total [as N] | 4 | 2 | 0 | ||
| Phosphorus, total [as P] | 4 | 2 | 0 | ||
| E. coli, MTEC-MF | 4 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 1 | 0 | ||
| Oil and grease, hexane extr method | 1 | 1 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0031712.
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 MT0031712 there.
Nearby on the register
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- Every permit record in Wolf Creek, A to Z
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.