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Clean Water Act discharge permit · NPDES MTG650048

ENNIS WASTEWATER TREATMENT PLANT, Ennis, MT: NPDES MTG650048 discharge permit, effluent exceedances, inspections, penalties

ENNIS WASTEWATER TREATMENT PLANT, held by Ennis Wastewater Treatment Plant, holds NPDES permit MTG650048. 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 ENNIS WASTEWATER TREATMENT PLANT: its NPDES ID, its permit type and status, its its address in Ennis, Montana. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG650048.

Identity

Facility as filedENNIS WASTEWATER TREATMENT PLANT
Permittee as filedEnnis Wastewater Treatment Plant
NPDES IDMTG650048
Permit statusNot needed
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
AddressEnnis, MT 59729
Receiving water impaired303(D) Listed
SubwatershedMadison River-Lower O'Dell Creek (HUC 100200071205)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTG650048.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTG650048.

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, MTG650048.

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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 MTG650048 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

The ENNIS WASTEWATER TREATMENT PLANT is one of 2 NPDES permits in the Madison River-Lower O'Dell Creek subwatershed, including this one. It is also one of 15 general permit coverages in Madison County, and 20.0% of those 15 general permit coverages carry a violation on file. This permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.