Clean Water Act discharge permit · NPDES MT0021211
CITY OF GLASGOW WWTF, Glasgow, MT: NPDES MT0021211 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
CITY OF GLASGOW WWTF, held by CITY OF GLASGOW, holds NPDES permit MT0021211, which discharges to Lower Milk River. EPA’s file records it issued July 22, 2013 and expiring August 31, 2018. 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 | CITY OF GLASGOW WWTF |
|---|---|
| Permittee as filed | CITY OF GLASGOW |
| NPDES ID | MT0021211 |
| 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 | July 22, 2013 |
| Expiration date | August 31, 2018 |
| Issuing agency | MONTANA DEQ |
| Address | Glasgow, MT 59230 |
| Receiving water | LOWER MILK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Milk River-Glasgow (HUC 100500121001) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MTR000203281 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 27Pollutants on file
- 16Under a numeric limit
- 27With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 2 | 14 | 7 | February 28, 2021 | 202% over the limit |
| E. coli, MTEC-MF | 4 | 19 | 6 | October 31, 2012 | 29,751% over the limit |
| Solids, suspended percent removal | 1 | 8 | 5 | May 31, 2025 | 100% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 3 | June 30, 2026 | 40% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 24 | 1 | September 30, 2014 | 33% over the limit |
| Phosphorus, total [as P] | 4 | 14 | 1 | June 30, 2007 | 12% over the limit |
| Nitrogen, total [as N] | 4 | 12 | 1 | June 30, 2007 | 13% over the limit |
| Coliform, fecal general | 0 | 1 | 1 | April 30, 2002 | 18% over the limit |
| Solids, total suspended | 5 | 23 | 0 | ||
| Flow rate | 4 | 16 | 0 | ||
| Temperature, water deg. centigrade | 2 | 6 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 5 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 5 | 0 | ||
| Oil and grease, hexane extr method | 1 | 3 | 0 | ||
| Lead, total recoverable | 1 | 3 | 0 | ||
| Mercury, total recoverable | 1 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 1 | 0 | ||
| Arsenic, total recoverable | 0 | 1 | 0 | ||
| Selenium, total recoverable | 0 | 1 | 0 | ||
| Silver total recoverable | 0 | 1 | 0 | ||
| Zinc, total recoverable | 0 | 1 | 0 | ||
| Cadmium, total recoverable | 0 | 1 | 0 | ||
| Chromium, total recoverable | 0 | 1 | 0 | ||
| Copper, total recoverable | 0 | 1 | 0 | ||
| Solids, total dissolved [TDS] | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 14, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 14, 2026 | Management Practice Violations - Improper Operation and Maintenance | 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MT0021211.
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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 MT0021211 there.
Nearby on the register
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- Every permit record in Glasgow, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.