Clean Water Act discharge permit · NPDES MT0020699
WHITE SULPHUR SPRINGS WWTF, White Sulphur Springs, MT: NPDES MT0020699 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
WHITE SULPHUR SPRINGS WWTF, held by CITY OF WHITE SULPHUR SPRINGS, holds NPDES permit MT0020699, which discharges to Unnamed Irrigation Ditch. EPA’s file records it issued July 7, 2015 and expiring August 31, 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 | WHITE SULPHUR SPRINGS WWTF |
|---|---|
| Permittee as filed | CITY OF WHITE SULPHUR SPRINGS |
| NPDES ID | MT0020699 |
| 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 | July 7, 2015 |
| Expiration date | August 31, 2020 |
| Issuing agency | MONTANA DEQ |
| Address | White Sulphur Springs, MT 59645 |
| Receiving water | UNNAMED IRRIGATION DITCH |
| Subwatershed | Hot Springs Creek (HUC 100301030206) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 9Under a numeric limit
- 19With a violation of any kind
- 6With 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 | 9 | 163 | 79 | August 31, 2025 | 3,247% over the limit |
| BOD, 5-day, percent removal | 2 | 76 | 59 | March 31, 2026 | 567% over the limit |
| E. coli, MTEC-MF | 8 | 67 | 55 | June 30, 2018 | 21,126% over the limit |
| Solids, suspended percent removal | 2 | 69 | 51 | June 30, 2025 | 849% over the limit |
| pH | 4 | 78 | 44 | October 31, 2025 | |
| Solids, total suspended | 9 | 101 | 15 | June 30, 2011 | 42% over the limit |
| Temperature, water deg. centigrade | 0 | 39 | 0 | ||
| Flow rate | 2 | 30 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 13 | 0 | ||
| Chlorine, total residual | 2 | 12 | 0 | ||
| Duration of discharge | 0 | 12 | 0 | ||
| Phosphorus, total [as P] | 0 | 10 | 0 | ||
| Nitrogen, total [as N] | 0 | 8 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 5 | 0 | ||
| Oil and grease, hexane extr method | 1 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| Solids, total dissolved [TDS] | 0 | 4 | 0 | ||
| Oil & Grease | 0 | 2 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 3, 2024 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 3, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 19, 2020 | Reporting Violations - Improper/ Incorrect Reporting | 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 MT0020699 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.