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Clean Water Act discharge permit · NPDES MTR109449

CITY OF BILLINGS - W.O. 22-10 ALKALI CREEK WATER & SEWER EXTENSION, Billings, MT: NPDES MTR109449 discharge permit, effluent exceedances, inspections, penalties

CITY OF BILLINGS - W.O. 22-10 ALKALI CREEK WATER & SEWER EXTENSION, held by WESTERN MUNICIPAL CONSTRUCTION INC, holds NPDES permit MTR109449, which discharges to Alkali Creek. EPA’s file records it issued March 31, 2022 and expiring December 31, 2022. 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.

What the register holds for CITY OF BILLINGS - W.O. 22-10 ALKALI CREEK WATER & SEWER EXTENSION: its NPDES ID, its permit type and status, its dates, its address in Billings, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109449.

Identity

Facility as filedCITY OF BILLINGS - W.O. 22-10 ALKALI CREEK WATER & SEWER EXTENSION
Permittee as filedWESTERN MUNICIPAL CONSTRUCTION INC
NPDES IDMTR109449
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
ProgramConstruction stormwater
IssuedMarch 31, 2022
Expiration dateDecember 31, 2022
AddressBillings, MT 59105
Receiving waterALKALI CREEK
SubwatershedAlkali Creek (HUC 100700041005)
SIC1623 – Water, Sewer, And Utility Lines

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR109449.

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 MTR109449.

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, MTR109449.

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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 MTR109449 there.

Nearby on the register

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

What this page shows

The CITY OF BILLINGS - W.O. 22-10 ALKALI CREEK WATER & SEWER EXTENSION is one of 262 storm water construction permits on EPA's NPDES register in Yellowstone County, Montana, and one of 8 NPDES permits in the Alkali Creek subwatershed. Among the 253 storm water construction permits in Yellowstone County, 59.3% were issued before this one, and 5.0% of the 262 county permits carry a violation on file, while this permit records 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.