Clean Water Act discharge permit · NPDES MT0022705
GARDINER WASTEWATER TREATMENT FACILITY, Gardiner, MT: NPDES MT0022705 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
GARDINER WASTEWATER TREATMENT FACILITY, held by GARDINER AND PARK COUNTY WATER AND SEWER DIST, holds NPDES permit MT0022705, which discharges to Yellowstone River. EPA’s file records it issued May 29, 2015 and expiring June 30, 2020. 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 | GARDINER WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | GARDINER AND PARK COUNTY WATER AND SEWER DIST |
| NPDES ID | MT0022705 |
| 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 | May 29, 2015 |
| Expiration date | June 30, 2020 |
| Address | Gardiner, MT 59030 |
| Receiving water | YELLOWSTONE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Last Chance Gulch (HUC 100301011309) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 24Pollutants on file
- 20Under a numeric limit
- 24With a violation of any kind
- 7With 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 | 14 | 80 | 34 | August 31, 2024 | 100% over the limit |
| pH | 6 | 38 | 30 | November 30, 2023 | |
| BOD, 5-day, percent removal | 2 | 34 | 29 | July 31, 2024 | 260% over the limit |
| Solids, suspended percent removal | 2 | 24 | 21 | June 30, 2025 | 109% over the limit |
| Solids, total suspended | 14 | 57 | 20 | April 30, 2026 | 99,999% over the limit |
| E. coli, MTEC-MF | 0 | 11 | 6 | June 30, 2011 | 852% over the limit |
| E. coli, colony forming units [CFU] | 12 | 4 | 1 | July 31, 2019 | 7% over the limit |
| Coliform, fecal general | 0 | 34 | 0 | ||
| Flow rate | 4 | 24 | 0 | ||
| Nitrogen, total [as N] | 16 | 19 | 0 | ||
| Phosphorus, total [as P] | 12 | 17 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 15 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 6 | 14 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 14 | 0 | ||
| Temperature, water deg. centigrade | 5 | 7 | 0 | ||
| Arsenic, total recoverable | 3 | 5 | 0 | ||
| Oil and grease, hexane extr method | 2 | 4 | 0 | ||
| Duration of discharge | 0 | 4 | 0 | ||
| Oil and grease visual | 0 | 2 | 0 | ||
| Selenium, total recoverable | 3 | 1 | 0 | ||
| Zinc, total recoverable | 3 | 1 | 0 | ||
| Cadmium, total recoverable | 3 | 1 | 0 | ||
| Copper, total recoverable | 3 | 1 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 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 |
|---|---|---|
| December 7, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 7, 2022 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| December 7, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| December 7, 2022 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| February 28, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| February 28, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| February 28, 2019 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| February 28, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| February 28, 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.
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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 MT0022705 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.