Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES MTR111787

3 RIVERS LANDWORKS NEW BUILD, Missoula, MT: NPDES MTR111787 discharge permit, effluent exceedances, inspections, penalties

3 RIVERS LANDWORKS NEW BUILD, held by 3 Rivers Landworks, holds NPDES permit MTR111787, which discharges to Grass Valley French Ditch. EPA’s file records it issued April 23, 2026 and expiring December 31, 2027. 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 3 RIVERS LANDWORKS NEW BUILD: its NPDES ID, its permit type and status, its dates, its address in Missoula, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111787.

Identity

Facility as filed3 RIVERS LANDWORKS NEW BUILD
Permittee as filed3 Rivers Landworks
NPDES IDMTR111787
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedApril 23, 2026
Expiration dateDecember 31, 2027
AddressMissoula, MT 59808
Receiving waterGRASS VALLEY FRENCH DITCH
SubwatershedLa Valle Creek (HUC 170102040202)

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 MTR111787.

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 MTR111787.

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, MTR111787.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 MTR111787 there.

Nearby on the register

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

What this page shows

Of the 194 storm water construction permits in Missoula County that include this permit, 89.7% were issued before the 3 RIVERS LANDWORKS NEW BUILD permit. Missoula County has 206 storm water construction permits on the register, and 13.1% of them have a violation on file. The La Valle Creek subwatershed holds 25 NPDES permits, a count that includes this permit.