Clean Water Act discharge permit · NPDES MTG580034
TOWN OF NASHUA WWTF, Nashua, MT: NPDES MTG580034 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
TOWN OF NASHUA WWTF, held by TOWN OF NASHUA, holds NPDES permit MTG580034, which discharges to Milk River. EPA’s file records it issued December 27, 2017 and expiring December 31, 2022. 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 | TOWN OF NASHUA WWTF |
|---|---|
| Permittee as filed | TOWN OF NASHUA |
| NPDES ID | MTG580034 |
| 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 | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 27, 2017 |
| Expiration date | December 31, 2022 |
| Address | Nashua, MT 59248 |
| Receiving water | MILK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Milk River-Nashua (HUC 100500121002) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 10Under a numeric limit
- 20With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 355 | 0 | ||
| Solids, total suspended | 4 | 261 | 0 | ||
| Flow rate | 3 | 127 | 0 | ||
| pH | 2 | 125 | 0 | ||
| E. coli, MTEC-MF | 4 | 122 | 0 | ||
| Duration of discharge | 1 | 70 | 0 | ||
| BOD, 5-day, percent removal | 1 | 57 | 0 | ||
| Oil & Grease | 1 | 49 | 0 | ||
| Oil and grease visual | 1 | 49 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 36 | 0 | ||
| Nitrogen, total [as N] | 0 | 28 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 28 | 0 | ||
| Phosphorus, total [as P] | 0 | 28 | 0 | ||
| Chlorine, total residual | 2 | 24 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 20 | 0 | ||
| Flow rate | 0 | 10 | 0 | ||
| Solids, suspended percent removal | 0 | 8 | 0 | ||
| Coliform, fecal general | 0 | 4 | 0 | ||
| Temperature, water deg. centigrade | 0 | 3 | 0 | ||
| Oil and grease, hexane extr method | 0 | 3 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG580034.
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 MTG580034.
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 MTG580034 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.