Clean Water Act discharge permit · NPDES MTR040003

CITY OF HELENA MS-4, Helena, MT: NPDES MTR040003 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

CITY OF HELENA MS-4, held by CITY OF HELENA, holds NPDES permit MTR040003, which discharges to Ten Mile Creek And Prickly Pear Creek. EPA’s file records it issued January 31, 2017 and expiring December 31, 2021. 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.

Identity

Facility as filed	CITY OF HELENA MS-4
Permittee as filed	CITY OF HELENA
NPDES ID	MTR040003
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Small municipal storm sewer systems
Issued	January 31, 2017
Expiration date	December 31, 2021
Address	Helena, MT 59601
Receiving water	TEN MILE CREEK AND PRICKLY PEAR CREEK
Subwatershed	Last Chance Gulch (HUC 100301011309)
SIC	9511 – Air, Water, & Solid Waste Management

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

10Pollutants on file
0Under a numeric limit
10With a violation of any kind
0With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	0	4	0
Flow rate	0	2	0
Solids, total suspended	0	2	0
Oil and grease, hexane extr method	0	2	0
Nitrogen, total [as N]	0	2	0
Phosphorus, total [as P]	0	2	0
Zinc, total recoverable	0	2	0
Lead, total recoverable	0	2	0
Copper, total recoverable	0	2	0
Chemical Oxygen Demand [COD]	0	2	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTR040003.

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

1Single-event violations

Date	What EPA recorded	Agency
February 1, 2022	WW Storm Water MS4 - Failure to develop any or adequate SWPPP/SWMP	ST6

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

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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 MTR040003 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit MTR040003, held by CITY OF HELENA for its MS-4 in Helena, MT, which discharges to TEN MILE CREEK AND PRICKLY PEAR CREEK. The page lists the permit as administratively continued, with 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it sits in watershed HUC 100301011309 (Last Chance Gulch).