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Clean Water Act discharge permit · NPDES MTB002915

MARK COOPER - JEFFERSON RIVER - WILLOW CREEK, Willow Creek, MT: NPDES MTB002915 discharge permit, effluent exceedances, inspections, penalties

MARK COOPER - JEFFERSON RIVER - WILLOW CREEK, held by MARK COOPER, holds NPDES permit MTB002915, which discharges to Jefferson River. 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 MARK COOPER - JEFFERSON RIVER - WILLOW CREEK: its NPDES ID, its permit type and status, its its address in Willow Creek, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTB002915.

Identity

Facility as filedMARK COOPER - JEFFERSON RIVER - WILLOW CREEK
Permittee as filedMARK COOPER
NPDES IDMTB002915
Permit statusPending
Permit typeState-issued individual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
Issuing agencyMONTANA DEQ
AddressWillow Creek, MT 59760
Receiving waterJEFFERSON RIVER
Receiving water impaired303(D) Listed
SubwatershedJefferson River-Three Forks (HUC 100200050805)

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 MTB002915.

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 MTB002915.

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, MTB002915.

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How we handle your data → Privacy

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 MTB002915 there.

Nearby on the register

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

What this page shows

The MARK COOPER - JEFFERSON RIVER - WILLOW CREEK permit, NPDES ID MTB002915, is one of 45 state-issued individual permits in Gallatin County on EPA's NPDES register, and one of 12 NPDES permits in the Jefferson River-Three Forks subwatershed. Among the 45 Gallatin County permits, 55.6% have a violation on file, while this permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.