Clean Water Act discharge permit · NPDES MT0031500
TOWN OF PHILIPSBURG WWTP, Philipsburg, MT: NPDES MT0031500 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 24Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
TOWN OF PHILIPSBURG WWTP, held by TOWN OF PHILIPSBURG, holds NPDES permit MT0031500, which discharges to Flint Creek. EPA’s file records it issued June 25, 2007 and expiring July 31, 2012. 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 | TOWN OF PHILIPSBURG WWTP |
|---|---|
| Permittee as filed | TOWN OF PHILIPSBURG |
| NPDES ID | MT0031500 |
| 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 | June 25, 2007 |
| Expiration date | July 31, 2012 |
| Issuing agency | MONTANA DEQ |
| Address | Philipsburg, MT 59858 |
| Receiving water | FLINT CREEK |
| Subwatershed | Flint Creek-Philipsburg (HUC 170102020202) |
| 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
- 26Pollutants on file
- 24Under a numeric limit
- 23With a violation of any kind
- 7With 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 | 10 | 54 | 41 | September 30, 2017 | 297% over the limit |
| BOD, 5-day, 20 deg. C | 10 | 45 | 33 | February 28, 2018 | 164% over the limit |
| E. coli, colony forming units [CFU] | 0 | 27 | 25 | February 28, 2018 | 3,732% over the limit |
| BOD, 5-day, percent removal | 2 | 24 | 19 | March 31, 2017 | 326% over the limit |
| E. coli, MTEC-MF | 7 | 23 | 19 | January 31, 2015 | 266,556% over the limit |
| Solids, suspended percent removal | 2 | 18 | 13 | September 30, 2017 | 274% over the limit |
| Phosphorus, total [as P] | 4 | 15 | 1 | July 31, 2020 | 37% over the limit |
| Nitrogen, total [as N] | 4 | 13 | 0 | ||
| Flow rate | 4 | 9 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 8 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 7 | 0 | ||
| pH | 4 | 6 | 0 | ||
| Temperature, water deg. centigrade | 1 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| Solids, total dissolved [TDS] | 1 | 4 | 0 | ||
| Oil and grease, hexane extr method | 1 | 2 | 0 | ||
| Mercury, total recoverable | 1 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 1 | 0 | ||
| Arsenic, total recoverable | 1 | 1 | 0 | ||
| Lead, total recoverable | 1 | 1 | 0 | ||
| Copper, total recoverable | 1 | 1 | 0 | ||
| Report due [yrmoda] | 0 | 1 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Cadmium, total recoverable | 1 | 0 | 0 | ||
| Antimony, total recoverable | 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
- 8Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 7, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| February 7, 2023 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| February 7, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 9, 2019 | Management Practice Violations - Failure to Maintain Records | ST6 |
| May 9, 2019 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| May 9, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| May 9, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| May 9, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | 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 MT0031500 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.