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Clean Water Act discharge permit · NPDES MTG870005

MOSQUITO CONTROL LLC - BIG HORN PESTICIDE, Hardin, MT: NPDES MTG870005 discharge permit, effluent exceedances, inspections, penalties

MOSQUITO CONTROL LLC - BIG HORN PESTICIDE, held by MOSQUITO CONTROL LLC, holds NPDES permit MTG870005, which discharges to Lower Bighorn River. EPA’s file records it issued November 17, 2016 and expiring October 31, 2021. 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 MOSQUITO CONTROL LLC - BIG HORN PESTICIDE: its NPDES ID, its permit type and status, its dates, its address in Hardin, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG870005.

Identity

Facility as filedMOSQUITO CONTROL LLC - BIG HORN PESTICIDE
Permittee as filedMOSQUITO CONTROL LLC
NPDES IDMTG870005
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedNovember 17, 2016
Expiration dateOctober 31, 2021
AddressHardin, MT 59034
Receiving waterLOWER BIGHORN RIVER
SubwatershedBighorn River-Hardin (HUC 100800150704)

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 MTG870005.

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 MTG870005.

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, MTG870005.

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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 MTG870005 there.

Nearby on the register

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

What this page shows

Among the 10 general permit coverages in Big Horn County, 40.0% carry a violation on file, and this permit belongs to MOSQUITO CONTROL LLC - BIG HORN PESTICIDE. The Bighorn River-Hardin subwatershed under HUC 100800150704 holds 13 NPDES permits. Of the 9 general permit coverages in Big Horn County, including this permit, 44.4% were issued before it.