Clean Water Act discharge permit · NPDES MT0030341
CITY OF LIBBY WTP, Libby, MT: NPDES MT0030341 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CITY OF LIBBY WTP, held by CITY OF LIBBY, holds NPDES permit MT0030341, which discharges to Kootenai River. EPA’s file records it issued February 25, 2015 and expiring March 31, 2020. 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.
Identity
| Facility as filed | CITY OF LIBBY WTP |
|---|---|
| Permittee as filed | CITY OF LIBBY |
| NPDES ID | MT0030341 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | February 25, 2015 |
| Expiration date | March 31, 2020 |
| Address | Libby, MT 59923 |
| Receiving water | KOOTENAI RIVER |
| Subwatershed | Flower Creek (HUC 170101011001) |
| SIC | 4941 – Water Supply |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 8Pollutants on file
- 6Under a numeric limit
- 7With a violation of any kind
- 1With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Aluminum, dissolved [as Al] | 5 | 31 | 4 | January 31, 1999 | 270% over the limit |
| Solids, total suspended | 5 | 25 | 0 | ||
| Chlorine, total residual | 3 | 17 | 0 | ||
| Turbidity | 0 | 16 | 0 | ||
| pH | 2 | 10 | 0 | ||
| Flow rate | 4 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 6 | 0 | ||
| Report due [yrmoda] | 1 | 0 | 0 |
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0030341.
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, MT0030341.
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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 MT0030341 there.
Nearby on the register
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- Every permit record in Libby, A to Z
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.