Clean Water Act discharge permit · NPDES MTG071270
WESTEND WATER TREATMENT PLANT, Billings, MT: NPDES MTG071270 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WESTEND WATER TREATMENT PLANT, held by Askin Construction LLC, holds NPDES permit MTG071270, which discharges to Canyon Creek. EPA’s file records it issued January 18, 2024 and expiring February 28, 2025. 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.
What the register holds for WESTEND WATER TREATMENT PLANT: its NPDES ID, its permit type and status, its dates, its address in Billings, Montana, its receiving water, and 5 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG071270.
Identity
| Facility as filed | WESTEND WATER TREATMENT PLANT |
|---|---|
| Permittee as filed | Askin Construction LLC |
| NPDES ID | MTG071270 |
| 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 |
| Issued | January 18, 2024 |
| Expiration date | February 28, 2025 |
| Address | Billings, MT 59102 |
| Receiving water | CANYON CREEK |
| Subwatershed | Yellowstone River-Billings (HUC 100700041006) |
| SIC | 1629 – Heavy Construction |
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
- 5Pollutants on file
- 5Under a numeric limit
- 0With 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 |
|---|---|---|---|---|---|
| Turbidity | 2 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Flowing, Receiving Stream | 1 | 0 | 0 | ||
| Oil and grease visual | 1 | 0 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG071270.
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 MTG071270.
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, MTG071270.
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- One watershed — $2,990/year
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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 MTG071270 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.