Clean Water Act discharge permit · NPDES MT0030295
CITY OF ROUNDUP WWTP, Roundup, MT: NPDES MT0030295 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 30Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
CITY OF ROUNDUP WWTP, held by CITY OF ROUNDUP, holds NPDES permit MT0030295, which discharges to Musselshell River. EPA’s file records it issued March 30, 2007 and expiring April 30, 2012. 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 ROUNDUP WWTP |
|---|---|
| Permittee as filed | CITY OF ROUNDUP |
| NPDES ID | MT0030295 |
| 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 | March 30, 2007 |
| Expiration date | April 30, 2012 |
| Issuing agency | MONTANA DEQ |
| Address | Roundup, MT 59072 |
| Receiving water | MUSSELSHELL RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Musselshell River-Roundup (HUC 100402020401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 30Under a numeric limit
- 20With 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 |
|---|---|---|---|---|---|
| Carbonaceous BOD, 5 day, 20 deg C filtrd | 8 | 123 | 123 | May 31, 2024 | 3,900% over the limit |
| Solids, total suspended | 10 | 62 | 62 | May 31, 2026 | 847% over the limit |
| BOD, carbonaceous, percent removal | 0 | 33 | 33 | January 31, 2024 | 99,999% over the limit |
| Solids, suspended percent removal | 2 | 16 | 16 | April 30, 2025 | 500% over the limit |
| E. coli, MTEC-MF | 10 | 38 | 12 | September 30, 2025 | 3,868% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 9 | 9 | June 30, 2013 | 133% over the limit |
| pH | 9 | 9 | 5 | May 31, 2026 | |
| BOD, 5-day, 20 deg. C | 0 | 5 | 5 | May 31, 1999 | 210% over the limit |
| Phosphorus, total [as P] | 8 | 8 | 0 | ||
| Oxygen, dissolved [DO] | 7 | 5 | 0 | ||
| Nitrogen, ammonia total [as N] | 7 | 5 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 7 | 5 | 0 | ||
| Nitrite + Nitrate total [as N] | 7 | 5 | 0 | ||
| Temperature, water deg. centigrade | 7 | 4 | 0 | ||
| Specific conductance | 5 | 4 | 0 | ||
| Chloride [as Cl] | 5 | 4 | 0 | ||
| Depth to water level ft below landsurface | 5 | 4 | 0 | ||
| Nitrogen, total [as N] | 3 | 4 | 0 | ||
| Oil and grease, hexane extr method | 2 | 1 | 0 | ||
| Solids, total dissolved [TDS] | 2 | 1 | 0 | ||
| Flow rate | 4 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 2 | 0 | 0 | ||
| Selenium, total recoverable | 2 | 0 | 0 | ||
| Silver total recoverable | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Cadmium, total recoverable | 2 | 0 | 0 | ||
| Lead, total recoverable | 2 | 0 | 0 | ||
| Chromium, total recoverable | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Mercury, total recoverable | 2 | 0 | 0 | ||
| Chlorine, total residual | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 15, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| October 15, 2020 | Management Practice Violations - Failure to Maintain Records | 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, MT0030295.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MT0030295 there.
Nearby on the register
- Discharge permits in Roundup
- Every permit record in Roundup, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.