Clean Water Act discharge permit · NPDES MTX000147
RIVER ROCK SUBDIVISION, Belgrade, MT: NPDES MTX000147 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 26Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
RIVER ROCK SUBDIVISION, held by RIVER ROCK COUNTY WATER AND SEWER DIST, holds NPDES permit MTX000147, which discharges to State Groundwater. EPA’s file records it issued April 1, 2010 and expiring March 31, 2015. 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 | RIVER ROCK SUBDIVISION |
|---|---|
| Permittee as filed | RIVER ROCK COUNTY WATER AND SEWER DIST |
| NPDES ID | MTX000147 |
| 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 | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2010 |
| Expiration date | March 31, 2015 |
| Issuing agency | MONTANA DEQ |
| Address | Belgrade, MT 59714 |
| Receiving water | STATE GROUNDWATER |
| Subwatershed | Gallatin River-Central Park (HUC 100200080705) |
| SIC | 4952 – Sewerage Systems |
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
- 27Pollutants on file
- 26Under a numeric limit
- 17With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Nitrogen, nitrate total [as N] | 8 | 36 | 24 | September 30, 2017 | 333% over the limit |
| E. coli, MTEC-MF | 7 | 139 | 1 | July 31, 2014 | 100% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 136 | 0 | ||
| Chloride [as Cl] | 6 | 133 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 122 | 0 | ||
| Water level at sample collection time | 4 | 96 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 94 | 0 | ||
| Nitrogen, total [as N] | 2 | 78 | 0 | ||
| pH | 2 | 42 | 0 | ||
| Flow rate | 1 | 40 | 0 | ||
| Phosphorus, total [as P] | 2 | 18 | 0 | ||
| Nitrogen, inorganic total | 4 | 8 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 4 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 4 | 0 | ||
| Carbonaceous BOD, 5 day, 20 deg C filtrd | 1 | 4 | 0 | ||
| Mercury, dissolved [as Hg] | 2 | 1 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Arsenic, dissolved [as As] | 2 | 0 | 0 | ||
| Cadmium, dissolved [as Cd] | 2 | 0 | 0 | ||
| Chromium, dissolved [as Cr] | 2 | 0 | 0 | ||
| Copper, dissolved [as Cu] | 2 | 0 | 0 | ||
| Lead, dissolved [as Pb] | 2 | 0 | 0 | ||
| Silver, dissolved [as Ag] | 2 | 0 | 0 | ||
| Zinc, dissolved [as Zn] | 2 | 0 | 0 | ||
| Selenium, dissolved [as Se] | 2 | 0 | 0 | ||
| Phenols | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MTX000147.
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, MTX000147.
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 MTX000147 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.