Clean Water Act discharge permit · NPDES MTG580029
CITY OF BAKER WWTF, Baker, MT: NPDES MTG580029 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
CITY OF BAKER WWTF, held by CITY OF BAKER, holds NPDES permit MTG580029, which discharges to Sandstone Creek. EPA’s file records it issued December 28, 2017 and expiring December 31, 2022. 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 | CITY OF BAKER WWTF |
|---|---|
| Permittee as filed | CITY OF BAKER |
| NPDES ID | MTG580029 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 28, 2017 |
| Expiration date | December 31, 2022 |
| Address | Baker, MT 59313 |
| Receiving water | SANDSTONE CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Sandstone Creek (HUC 101000050501) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 9Under a numeric limit
- 18With a violation of any kind
- 3With 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 | 6 | 39 | 2 | June 30, 2022 | 70% over the limit |
| pH | 2 | 12 | 1 | June 30, 2022 | |
| BOD, 5-day, percent removal | 1 | 6 | 1 | May 31, 2018 | 20% over the limit |
| Solids, total suspended | 4 | 28 | 0 | ||
| Flow rate | 2 | 16 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 14 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 13 | 0 | ||
| Phosphorus, total [as P] | 0 | 12 | 0 | ||
| E. coli, MTEC-MF | 4 | 11 | 0 | ||
| Duration of discharge | 1 | 11 | 0 | ||
| Nitrogen, total [as N] | 0 | 10 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 9 | 0 | ||
| Oil & Grease | 2 | 7 | 0 | ||
| Flow rate | 0 | 6 | 0 | ||
| Chlorine, total residual | 0 | 5 | 0 | ||
| Oil and grease visual | 1 | 4 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 1 | 0 | ||
| Oil and grease, hexane extr method | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 29, 2021 | Management Practice Violations - Failure to Conduct Inspections | ST6 |
| June 29, 2021 | Management Practice Violations - Failure to Maintain Records | ST6 |
| June 29, 2021 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| June 29, 2021 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | 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 MTG580029 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.