Clean Water Act discharge permit · NPDES MT0020460
YELLOWSTONE BOYS AND GIRLS RANCH COUNTY WATER SEWER DISTRICT, Billings, MT: NPDES MT0020460 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
YELLOWSTONE BOYS AND GIRLS RANCH COUNTY WATER SEWER DISTRICT, held by YELLOWSTONE BOYS AND GIRLS RANCH COUNTY WATER/SEWER DISTRICT, holds NPDES permit MT0020460, which discharges to Canyon Creek. EPA’s file records it issued January 16, 2015 and expiring February 29, 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 | YELLOWSTONE BOYS AND GIRLS RANCH COUNTY WATER SEWER DISTRICT |
|---|---|
| Permittee as filed | YELLOWSTONE BOYS AND GIRLS RANCH COUNTY WATER/SEWER DISTRICT |
| NPDES ID | MT0020460 |
| 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 |
| Program | Publicly owned treatment works |
| Issued | January 16, 2015 |
| Expiration date | February 29, 2020 |
| Address | Billings, MT 59106 |
| Receiving water | CANYON CREEK |
| Subwatershed | Lower Canyon Creek (HUC 100700040904) |
| SIC | 8361 – Residential Care |
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
- 19Pollutants on file
- 18Under a numeric limit
- 18With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 10 | 163 | 61 | May 31, 2025 | 1,275% over the limit |
| BOD, 5-day, 20 deg. C | 10 | 134 | 33 | May 31, 2025 | 1,457% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 62 | 21 | October 31, 2025 | 2,090% over the limit |
| E. coli, MTEC-MF | 8 | 16 | 9 | June 30, 2026 | 3,567% over the limit |
| Chlorine, total residual | 2 | 49 | 6 | October 31, 2000 | 1,173% over the limit |
| pH | 5 | 47 | 3 | March 31, 2026 | |
| Coliform, fecal general | 0 | 40 | 2 | May 31, 2007 | 1,050% over the limit |
| Solids, suspended percent removal | 1 | 5 | 2 | November 30, 2022 | 56% over the limit |
| Nitrogen, total [as N] | 8 | 92 | 1 | December 31, 2000 | 94% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 1 | March 31, 2021 | 130% over the limit |
| Phosphorus, total [as P] | 9 | 93 | 0 | ||
| Flow rate | 2 | 48 | 0 | ||
| Nitrite + Nitrate total [as N] | 3 | 45 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 42 | 0 | ||
| Temperature, water deg. centigrade | 1 | 41 | 0 | ||
| Oil & Grease | 2 | 2 | 0 | ||
| Duration of discharge | 1 | 1 | 0 | ||
| Oil and grease visual | 1 | 1 | 0 | ||
| Flow rate | 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 |
|---|---|---|
| February 24, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| December 19, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.