Clean Water Act discharge permit · NPDES MTG580025
FALLON WWTF, Fallon, MT: NPDES MTG580025 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
FALLON WWTF, held by FALLON WATER AND SEWER DISTRICT, holds NPDES permit MTG580025, which discharges to Buffalo Rapids Drain. EPA’s file records it issued December 29, 2017 and expiring December 31, 2022. 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 | FALLON WWTF |
|---|---|
| Permittee as filed | FALLON WATER AND SEWER DISTRICT |
| NPDES ID | MTG580025 |
| 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 29, 2017 |
| Expiration date | December 31, 2022 |
| Address | Fallon, MT 59326 |
| Receiving water | BUFFALO RAPIDS DRAIN |
| Subwatershed | Yellowstone River-Fallon (HUC 101000040705) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 9Under a numeric limit
- 15With 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 | 4 | 41 | 4 | November 30, 2017 | 313% over the limit |
| E. coli, MTEC-MF | 4 | 22 | 4 | November 30, 2017 | 1,027% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 37 | 0 | ||
| pH | 2 | 21 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 20 | 0 | ||
| Flow rate | 3 | 18 | 0 | ||
| Chlorine, total residual | 0 | 18 | 0 | ||
| Nitrogen, total [as N] | 0 | 12 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 12 | 0 | ||
| Phosphorus, total [as P] | 0 | 12 | 0 | ||
| Duration of discharge | 1 | 9 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 7 | 0 | ||
| Temperature, water deg. centigrade | 0 | 4 | 0 | ||
| BOD, 5-day, percent removal | 1 | 1 | 0 | ||
| Solids, suspended percent removal | 0 | 1 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Oil and grease visual | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG580025.
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 MTG580025 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.