Clean Water Act discharge permit · NPDES MTR000712
CITY OF HAMILTON WASTEWATER TREATMENT PLANT, Hamilton, MT: NPDES MTR000712 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CITY OF HAMILTON WASTEWATER TREATMENT PLANT, held by CITY OF HAMILTON, holds NPDES permit MTR000712, which discharges to Bitterroot River. EPA’s file records it issued February 24, 2021 and expiring January 31, 2023. 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 HAMILTON WASTEWATER TREATMENT PLANT |
|---|---|
| Permittee as filed | CITY OF HAMILTON |
| NPDES ID | MTR000712 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | February 24, 2021 |
| Expiration date | January 31, 2023 |
| Address | Hamilton, MT 59840 |
| Receiving water | BITTERROOT RIVER |
| Subwatershed | Bitterroot River-Woodside (HUC 170102051007) |
| 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
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR000712.
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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 10, 2023 | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| October 10, 2023 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | ST6 |
| October 10, 2023 | WW Storm Water Non-Construction - CWA §308 Failure to submit required permit application info | ST6 |
| February 17, 2022 | WW Storm Water Non-Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
| February 17, 2022 | WW Storm Water Non-Construction - Failure to properly install/implement BMPs | 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
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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 MTR000712 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.