Clean Water Act discharge permit · NPDES MT0020478
RED LODGE WWTF, Red Lodge, MT: NPDES MT0020478 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 19Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
RED LODGE WWTF, held by CITY OF RED LODGE, holds NPDES permit MT0020478, which discharges to Rock Creek. EPA’s file records it issued March 4, 2016 and expiring April 30, 2021. 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 | RED LODGE WWTF |
|---|---|
| Permittee as filed | CITY OF RED LODGE |
| NPDES ID | MT0020478 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 4, 2016 |
| Expiration date | April 30, 2021 |
| Address | Red Lodge, MT 59068 |
| Receiving water | ROCK CREEK |
| Subwatershed | Rock Creek-Stanley Draw (HUC 100700060906) |
| 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
- 35Pollutants on file
- 19Under a numeric limit
- 33With 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 | 5 | 17 | 12 | May 31, 2011 | 179% over the limit |
| E. coli, MTEC-MF | 4 | 13 | 11 | April 30, 2025 | 963% over the limit |
| Solids, total suspended | 5 | 15 | 10 | April 30, 2024 | 37% over the limit |
| Solids, suspended percent removal | 1 | 6 | 6 | May 31, 2020 | 111% over the limit |
| Nitrogen, total [as N] | 8 | 9 | 4 | May 31, 2011 | 24% over the limit |
| pH | 2 | 5 | 3 | April 30, 2009 | |
| Phosphorus, total [as P] | 8 | 6 | 2 | May 31, 2011 | 28% over the limit |
| BOD, 5-day, percent removal | 1 | 2 | 2 | May 31, 2011 | 43% over the limit |
| Coliform, fecal general | 0 | 2 | 2 | October 31, 2001 | 468% over the limit |
| Flow rate | 2 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 2 | 0 | ||
| Zinc, total recoverable | 2 | 1 | 0 | ||
| Copper, total recoverable | 2 | 1 | 0 | ||
| Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | 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 | ||
| Lead, total recoverable | 1 | 1 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 1 | 0 | ||
| Cyanide, total [as CN] | 0 | 1 | 0 | ||
| Arsenic, total recoverable | 0 | 1 | 0 | ||
| Selenium, total recoverable | 0 | 1 | 0 | ||
| Thallium, total recoverable | 0 | 1 | 0 | ||
| Beryllium, total recoverable [as Be] | 0 | 1 | 0 | ||
| Nickel, total recoverable | 0 | 1 | 0 | ||
| Silver total recoverable | 0 | 1 | 0 | ||
| Cadmium, total recoverable | 0 | 1 | 0 | ||
| Chromium, total recoverable | 0 | 1 | 0 | ||
| Antimony, total recoverable | 0 | 1 | 0 | ||
| Total phenols | 0 | 1 | 0 | ||
| Solids, total dissolved [TDS] | 0 | 1 | 0 | ||
| Mercury, total recoverable | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 30, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 15, 2021 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 6, 2018 | Reporting Violations - Failure to Notify | 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 MT0020478 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.