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Clean Water Act discharge permit · NPDES MTG770013

CITY OF BILLINGS, Billings, MT: NPDES MTG770013 discharge permit, effluent exceedances, inspections, penalties

CITY OF BILLINGS holds NPDES permit MTG770013, which discharges to Storm Sewer System To Yellowstone R. EPA’s file records it issued November 20, 2015 and expiring December 31, 2020. 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 filedCITY OF BILLINGS
Permittee as filedCITY OF BILLINGS
NPDES IDMTG770013
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
IssuedNovember 20, 2015
Expiration dateDecember 31, 2020
AddressBillings, MT 59101
Receiving waterSTORM SEWER SYSTEM TO YELLOWSTONE R
Receiving water impaired303(D) Listed
SubwatershedLower Blue Creek (HUC 100700041002)

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
Chlorine, total residual24987March 31, 2023460% over the limit
Solids, total suspended0266May 31, 20261,504% over the limit
Flow rate0590
pH0380
Oxidants released, total residual030

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 MTG770013.

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, MTG770013.

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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 MTG770013 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MTG770013, held by CITY OF BILLINGS in Billings, MT, with its status shown as administratively continued and its discharger class as Minor. The page lists 5 pollutants on file, 1 under a numeric limit, and 2 with an effluent exceedance, and it cites the receiving water as STORM SEWER SYSTEM TO YELLOWSTONE R within subwatershed Lower Blue Creek (HUC 100700041002).