Clean Water Act discharge permit · NPDES MT0022535
CITY OF HAVRE WWTP, Havre, MT: NPDES MT0022535 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 36Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
CITY OF HAVRE WWTP, held by CITY OF HAVRE, holds NPDES permit MT0022535, which discharges to Milk River. EPA’s file records it issued March 16, 2011 and expiring April 30, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CITY OF HAVRE WWTP |
|---|---|
| Permittee as filed | CITY OF HAVRE |
| NPDES ID | MT0022535 |
| 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 16, 2011 |
| Expiration date | April 30, 2016 |
| Issuing agency | MONTANA DEQ |
| Address | Havre, MT 59501 |
| Receiving water | MILK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Milk River-Havre (HUC 100500040404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 40Pollutants on file
- 36Under a numeric limit
- 22With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 9 | 9 | January 31, 2023 | 96% over the limit |
| Nitrogen, ammonia total [as N] | 7 | 9 | 4 | June 30, 2021 | 123% over the limit |
| Chlorine, total residual | 2 | 2 | 2 | December 31, 2001 | 462% over the limit |
| Solids, suspended percent removal | 1 | 2 | 2 | December 31, 2015 | 67% over the limit |
| Coliform, fecal general | 0 | 2 | 2 | May 31, 2009 | 138% over the limit |
| pH | 3 | 5 | 0 | ||
| Temperature, water deg. fahrenheit | 3 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 3 | 3 | 0 | ||
| Nitrogen, total [as N] | 4 | 2 | 0 | ||
| Copper, total recoverable | 2 | 2 | 0 | ||
| Report due [yrmoda] | 2 | 2 | 0 | ||
| Temperature, water deg. centigrade | 0 | 2 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 6 | 1 | 0 | ||
| Phosphorus, total [as P] | 4 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 1 | 0 | ||
| Lead, total recoverable | 2 | 1 | 0 | ||
| Mercury, total recoverable | 2 | 1 | 0 | ||
| Zinc, total recoverable | 1 | 1 | 0 | ||
| Toxic Units Static Renewal 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 0 | ||
| TU Static Renewal 96Hr Acute Pimphales promelas | 1 | 1 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 0 | 1 | 0 | ||
| Flow rate | 4 | 0 | 0 | ||
| E. coli, MTEC-MF | 4 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Oil and grease, hexane extr method | 1 | 0 | 0 | ||
| Cyanide, total [as CN] | 1 | 0 | 0 | ||
| Arsenic, total recoverable | 1 | 0 | 0 | ||
| Selenium, total recoverable | 1 | 0 | 0 | ||
| Thallium, total recoverable | 1 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 1 | 0 | 0 | ||
| Nickel, total recoverable | 1 | 0 | 0 | ||
| Silver total recoverable | 1 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Chromium, total recoverable | 1 | 0 | 0 | ||
| Antimony, total recoverable | 1 | 0 | 0 | ||
| Phenols | 1 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 0 | 0 | ||
| Oil and grease visual | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 10, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 10, 2026 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| February 10, 2026 | Management Practice Violations - Failure to Maintain Records | ST6 |
| January 17, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 5, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 5, 2020 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| December 13, 2017 | Monitoring Violations - Improper Analysis or Lab Error | 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 MT0022535 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.