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Clean Water Act discharge permit · NPDES MTG370356

ROBERT L ROYBAL - LIBBY CREEK, Libby, MT: NPDES MTG370356 discharge permit, effluent exceedances, inspections, penalties

ROBERT L ROYBAL - LIBBY CREEK, held by ROBERT L ROYBAL JR, holds NPDES permit MTG370356, which discharges to Libby Creek. 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 ROBERT L ROYBAL - LIBBY CREEK: its NPDES ID, its permit type and status, its its address in Libby, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTG370356.

Identity

Facility as filedROBERT L ROYBAL - LIBBY CREEK
Permittee as filedROBERT L ROYBAL JR
NPDES IDMTG370356
Permit statusNot needed
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
AddressLibby, MT 59923
Receiving waterLIBBY CREEK
SubwatershedUpper Libby Creek (HUC 170101010801)

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 MTG370356.

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 MTG370356.

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.

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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 MTG370356 there.

Nearby on the register

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

What this page shows

The permit filed as ROBERT L ROYBAL - LIBBY CREEK, held by ROBERT L ROYBAL JR in Libby, Lincoln County, Montana, is one of 28 general permit coverages in Lincoln County on EPA's NPDES register, and 7.1% of that group has a violation on file. It sits among 20 NPDES permits in the Upper Libby Creek subwatershed, this one included. The permit records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.