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Clean Water Act discharge permit · NPDES MTX000169

YELLOWSTONE CO WATER & SEWER, Custer, MT: NPDES MTX000169 discharge permit, effluent exceedances, inspections, penalties

YELLOWSTONE CO WATER & SEWER, held by YELLOWSTONE COUNTY, holds NPDES permit MTX000169. 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 YELLOWSTONE CO WATER & SEWER: its NPDES ID, its permit type and status, its its address in Custer, Montana. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTX000169.

Identity

Facility as filedYELLOWSTONE CO WATER & SEWER
Permittee as filedYELLOWSTONE COUNTY
NPDES IDMTX000169
Permit statusNot needed
Permit typeState-issued individual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
Issuing agencyMONTANA DEQ
AddressCuster, MT 59024
SubwatershedYellowstone River-Sand Creek (HUC 100700071106)

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 MTX000169.

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 MTX000169.

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, MTX000169.

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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 MTX000169 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 discharge permit NPDES MTX000169, held by YELLOWSTONE COUNTY for the facility YELLOWSTONE CO WATER & SEWER in Custer, MT, with a permit status of Not needed and a Minor discharger class. The page lists 0 pollutants on file, 0 under a numeric limit, 0 with a violation of any kind, and 0 with an effluent exceedance, and it cites subwatershed HUC 100700071106.