Clean Water Act discharge permit · NPDES MTX000171
ST MARY WASTEWATER FACILITY, Saint Marys, MT: NPDES MTX000171 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
ST MARY WASTEWATER FACILITY, held by GLACIER NATIONAL PARK, holds NPDES permit MTX000171, which discharges to Class 1 Ground Water. EPA’s file records it issued April 24, 2013 and expiring May 31, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ST MARY WASTEWATER FACILITY |
|---|---|
| Permittee as filed | GLACIER NATIONAL PARK |
| NPDES ID | MTX000171 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | State-issued individual permit |
| Discharger class | Minor discharger |
| Facility type | Federal facility |
| Issued | April 24, 2013 |
| Expiration date | May 31, 2018 |
| Address | Saint Marys, MT 59417 |
| Receiving water | CLASS 1 GROUND WATER |
| Subwatershed | Lower Saint Mary Lakes (HUC 090400010304) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 12Under a numeric limit
- 13With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 1 | 19 | 1 | June 30, 2010 | 87% over the limit |
| Solids, total suspended | 1 | 19 | 1 | September 30, 2010 | 67% over the limit |
| Nitrogen, total [as N] | 6 | 17 | 1 | September 30, 2009 | 8% over the limit |
| Phosphorus, total [as P] | 5 | 16 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 10 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 10 | 0 | ||
| Oil and grease, hexane extr method | 1 | 8 | 0 | ||
| Flow rate | 2 | 6 | 0 | ||
| pH | 0 | 4 | 0 | ||
| E. coli, MTEC-MF | 2 | 2 | 0 | ||
| Chloride [as Cl] | 1 | 2 | 0 | ||
| Water level at sample collection time | 1 | 2 | 0 | ||
| Specific conductance | 0 | 2 | 0 | ||
| Conductivity | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 12, 2026 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| August 12, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, MTX000171.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 MTX000171 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.