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Clean Water Act discharge permit · NPDES MTG770024

CITY OF HELENA DISCHARGE OF TREATED WATER TO MS4 SYSTEM, Helena, MT: NPDES MTG770024 discharge permit, effluent exceedances, inspections, penalties

CITY OF HELENA DISCHARGE OF TREATED WATER TO MS4 SYSTEM, held by HELENA CITY OF PUBLIC WORKS DEPT, holds NPDES permit MTG770024, which discharges to City Of Helena Storm Drain System. EPA’s file records it issued May 30, 2008 and expiring June 1, 2010. 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.

Identity

Facility as filedCITY OF HELENA DISCHARGE OF TREATED WATER TO MS4 SYSTEM
Permittee as filedHELENA CITY OF PUBLIC WORKS DEPT
NPDES IDMTG770024
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 30, 2008
Expiration dateJune 1, 2010
Issuing agencyMONTANA DEQ
AddressHelena, MT 59601
Receiving waterCITY OF HELENA STORM DRAIN SYSTEM
SubwatershedLower Prickley Pear Gulch (HUC 100301011310)

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

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Oxidants released, total residual361080
Oxidants, total residual0960
Flow rate2400

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG770024.

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 MTG770024.

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.

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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 MTG770024 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act NPDES permit MTG770024, held by Helena City of Public Works Dept for discharge of treated water to the MS4 system in Helena, MT, with status administratively continued and a minor discharger class. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit issued May 30, 2008 and expiring June 1, 2010.