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Clean Water Act discharge permit · NPDES MTR000483

JOHNS MANVILLE INC, Belgrade, MT: NPDES MTR000483 discharge permit, effluent exceedances, inspections, penalties

JOHNS MANVILLE INC holds NPDES permit MTR000483, which discharges to Gallatin River. EPA’s file records it issued May 23, 2018 and expiring January 31, 2023. 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.

What the register holds for JOHNS MANVILLE INC: its NPDES ID, its permit type and status, its dates, its address in Belgrade, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR000483.

Identity

Facility as filedJOHNS MANVILLE INC
Permittee as filedJOHNS MANVILLE INC
NPDES IDMTR000483
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
ProgramIndustrial stormwater
IssuedMay 23, 2018
Expiration dateJanuary 31, 2023
AddressBelgrade, MT 59714
Receiving waterGALLATIN RIVER
SubwatershedEast Gallatin River-Belgrade (HUC 100200081302)
SIC3086 – Plastics Foam Products
Other EPA IDs (FRS)RCRA handler MTR000207324

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR000483.

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 MTR000483.

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, MTR000483.

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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 MTR000483 there.

Nearby on the register

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

What this page shows

The Johns Manville Inc. storm water industrial permit (NPDES ID MTR000483) in Belgrade, Montana, is one of 34 storm water industrial permits in Gallatin County, and about 20.6% of those carry an earlier issue date than this one. It sits among 79 NPDES permits in the East Gallatin River-Belgrade subwatershed, and it has none of the pollutants under a numeric limit or any effluent exceedances on file.