Clean Water Act discharge permit · NPDES MT0030767
HARDIN, CITY OF, Hardin, MT: NPDES MT0030767 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HARDIN, CITY OF holds NPDES permit MT0030767, which discharges to Big Horn River. EPA’s file records it issued September 28, 2011 and expiring September 30, 2016. 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 | HARDIN, CITY OF |
|---|---|
| Permittee as filed | HARDIN, CITY OF |
| NPDES ID | MT0030767 |
| 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 |
| Issued | September 28, 2011 |
| Expiration date | September 30, 2016 |
| Issuing agency | U.S. EPA Region 8 |
| Address | Hardin, MT 59034 |
| Receiving water | Big Horn River |
| Subwatershed | Bighorn River-Whiskey Coulee (HUC 100800150603) |
| NAICS | 221310 – Water Supply and Irrigation Systems |
| SIC | 4941 – Water Supply |
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
- 8Pollutants on file
- 5Under a numeric limit
- 8With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 2 | 44 | 0 | ||
| Solids, total suspended | 2 | 44 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 36 | 0 | ||
| Chlorine, total residual | 1 | 27 | 0 | ||
| Aluminum, total [as Al] | 0 | 13 | 0 | ||
| Flow, total | 0 | 10 | 0 | ||
| Aluminum, total recoverable | 0 | 5 | 0 | ||
| Aluminum, dissolved [as Al] | 1 | 4 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MT0030767.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0030767.
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 MT0030767 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.