Clean Water Act discharge permit · NPDES MT0023639
BOULDER HOT SPRINGS PEACE VALLEY HOT SPRINGS WWTP, Boulder, MT: NPDES MT0023639 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
BOULDER HOT SPRINGS PEACE VALLEY HOT SPRINGS WWTP, held by PEACE VALLEY HOT SPRINGS, holds NPDES permit MT0023639, which discharges to Little Boulder River. EPA’s file records it issued June 9, 2009 and expiring July 31, 2014. 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.
Identity
| Facility as filed | BOULDER HOT SPRINGS PEACE VALLEY HOT SPRINGS WWTP |
|---|---|
| Permittee as filed | PEACE VALLEY HOT SPRINGS |
| NPDES ID | MT0023639 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 9, 2009 |
| Expiration date | July 31, 2014 |
| Issuing agency | MONTANA DEQ |
| Address | Boulder, MT 59632 |
| Receiving water | LITTLE BOULDER RIVER |
| Subwatershed | Little Boulder River (HUC 100200060402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 21Pollutants on file
- 15Under a numeric limit
- 21With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| E. coli, MTEC-MF | 6 | 45 | 35 | December 31, 2023 | 1,825% over the limit |
| Nitrogen, total [as N] | 2 | 21 | 7 | September 30, 2023 | 83% over the limit |
| Phosphorus, total [as P] | 2 | 19 | 4 | September 30, 2025 | 2,967% over the limit |
| Solids, total suspended | 3 | 30 | 3 | January 31, 2026 | 349% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 15 | 1 | July 31, 2001 | 30% over the limit |
| Chlorine, total residual | 3 | 17 | 0 | ||
| Flow rate | 2 | 11 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 9 | 0 | ||
| pH | 2 | 8 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 8 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 8 | 0 | ||
| Temperature, water deg. centigrade | 2 | 7 | 0 | ||
| Flow rate | 1 | 7 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 5 | 0 | ||
| Coliform, fecal general | 0 | 5 | 0 | ||
| Oil and grease, hexane extr method | 1 | 4 | 0 | ||
| Aluminum, dissolved [as Al] | 0 | 2 | 0 | ||
| Iron, total recoverable | 0 | 1 | 0 | ||
| Lead, total recoverable | 0 | 1 | 0 | ||
| Copper, total recoverable | 0 | 1 | 0 | ||
| Report due [yrmoda] | 0 | 1 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 10, 2023 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| January 10, 2023 | Monitoring Violations - Analysis not Conducted | ST6 |
| January 10, 2023 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| January 10, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 27, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| February 27, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| February 27, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 27, 2019 | Management Practice Violations - Failure to Maintain Records | ST6 |
| February 27, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
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, MT0023639.
Start the watch
- 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 MT0023639 there.
Nearby on the register
- Discharge permits in Boulder
- Every permit record in Boulder, A to Z
- Discharge permits in Montana
- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.