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Clean Water Act discharge permit · NPDES MTR111590

BLACKFOOT CROSSING, Milltown, MT: NPDES MTR111590 discharge permit, effluent exceedances, inspections, penalties

BLACKFOOT CROSSING, held by KNIFE RIVER MISSOULA, holds NPDES permit MTR111590, which discharges to Blackfoot River. EPA’s file records it issued December 8, 2025 and expiring December 31, 2027. 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.

What the register holds for BLACKFOOT CROSSING: its NPDES ID, its permit type and status, its dates, its address in Milltown, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111590.

Identity

Facility as filedBLACKFOOT CROSSING
Permittee as filedKNIFE RIVER MISSOULA
NPDES IDMTR111590
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedDecember 8, 2025
Expiration dateDecember 31, 2027
AddressMilltown, MT 59851
Receiving waterBLACKFOOT RIVER
SubwatershedBlackfoot River-Johnson Gulch (HUC 170102031308)

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 MTR111590.

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 MTR111590.

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, MTR111590.

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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 MTR111590 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The BLACKFOOT CROSSING permit (NPDES ID MTR111590), a Storm Water Construction coverage issued December 8, 2025 to KNIFE RIVER MISSOULA in Milltown, Missoula County, Montana, is one of 206 storm water construction permits in Missoula County, and 13.1% of those 206 carry a violation on file. Of the 194 storm water construction permits in Missoula County, 82.0% were issued earlier than this one. The permit sits among 8 NPDES permits in the Blackfoot River-Johnson Gulch subwatershed, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance.