Clean Water Act discharge permit · NPDES MT0021709
HYSHAM WWTP, Hysham, MT: NPDES MT0021709 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
HYSHAM WWTP, held by TOWN OF HYSHAM, holds NPDES permit MT0021709, which discharges to Yellowstone River. EPA’s file records it issued November 17, 2009 and expiring December 31, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HYSHAM WWTP |
|---|---|
| Permittee as filed | TOWN OF HYSHAM |
| NPDES ID | MT0021709 |
| 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 | November 17, 2009 |
| Expiration date | December 31, 2014 |
| Issuing agency | MONTANA DEQ |
| Address | Hysham, MT 59038 |
| Receiving water | YELLOWSTONE RIVER |
| Subwatershed | Yellowstone River-Hysham (HUC 101000010307) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 8Under a numeric limit
- 13With a violation of any kind
- 2With 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 | 8 | 24 | 2 | May 31, 2012 | 64% over the limit |
| BOD, 5-day, percent removal | 2 | 6 | 1 | June 30, 2010 | 5% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 30 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 13 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 13 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 13 | 0 | ||
| Phosphorus, total [as P] | 0 | 13 | 0 | ||
| pH | 4 | 12 | 0 | ||
| Flow rate | 2 | 5 | 0 | ||
| E. coli, MTEC-MF | 2 | 5 | 0 | ||
| Duration | 2 | 5 | 0 | ||
| Oil and grease, hexane extr method | 3 | 3 | 0 | ||
| Coliform, fecal general | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0021709.
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, MT0021709.
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 MT0021709 there.
Nearby on the register
- Discharge permits in Hysham
- Every permit record in Hysham, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.