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Clean Water Act discharge permit · NPDES MTR109188

INTERPOINTE APARTMENTS PHASE 2, Billings, MT: NPDES MTR109188 discharge permit, effluent exceedances, inspections, penalties

INTERPOINTE APARTMENTS PHASE 2, held by KNIFE RIVER - BILLINGS, holds NPDES permit MTR109188, which discharges to Suburban Ditch. EPA’s file records it issued October 6, 2021 and expiring December 31, 2022. 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 INTERPOINTE APARTMENTS PHASE 2: 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 MTR109188.

Identity

Facility as filedINTERPOINTE APARTMENTS PHASE 2
Permittee as filedKNIFE RIVER - BILLINGS
NPDES IDMTR109188
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedOctober 6, 2021
Expiration dateDecember 31, 2022
AddressBillings, MT 59106
Receiving waterSUBURBAN DITCH
SubwatershedHogans Slough (HUC 100700041003)

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 MTR109188.

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 MTR109188.

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, MTR109188.

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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 MTR109188 there.

Nearby on the register

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

What this page shows

The INTERPOINTE APARTMENTS PHASE 2 permit is one of 262 storm water construction permits in Yellowstone County on EPA's NPDES register, which places it among a large group of similar coverages in that county. It sits within the Hogans Slough subwatershed, which holds 47 NPDES permits including this one. Of the 253 storm water construction permits in Yellowstone County, 53.0% were issued earlier than this one, while 5.0% of the 262 such permits in the county carry a violation on file, and this permit has no pollutants under a numeric limit and no effluent exceedances recorded.