RIVER GROVE ESTATES TR CT
PWS ID: MT0000123 · PORT ORCHARD, Montana 98366
Population Served
100
Total Violations
585
Health-Based Violations
48
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 48
- County
- Yellowstone
- School/Daycare
- No
- MCL Violations
- 48
- Monitoring Violations
- 523
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 104 | 2014 |
| Lead and Copper Rule | MR | 64 | 2015 |
| Nitrate-Nitrite | MR | 60 | 2012 |
| Nitrate-Nitrite | MCL | 48 | 2007 |
| Groundwater Rule | MR | 24 | 2024 |
| TTHM | MR | 20 | 2010 |
| Total Haloacetic Acids (HAA5) | MR | 20 | 2010 |
| Gross Alpha, Excl. Radon and U | MR | 14 | 2008 |
| Combined Radium (-226 and -228) | MR | 14 | 2008 |
| Consumer Confidence Rule | Other | 10 | 2012 |
| Nitrate | MR | 7 | 1998 |
| Revised Total Coliform Rule | MON | 7 | 2021 |
| Chromium | MR | 6 | 2005 |
| Nickel | MR | 6 | 2005 |
| Antimony, Total | MR | 6 | 2005 |
| Selenium | MR | 6 | 2005 |
| Thallium, Total | MR | 6 | 2005 |
| Fluoride | MR | 6 | 2005 |
| Mercury | MR | 6 | 2005 |
| Cadmium | MR | 6 | 2005 |
| Barium | MR | 6 | 2005 |
| Beryllium, Total | MR | 6 | 2005 |
| Di(2-ethylhexyl) adipate | MR | 5 | 2002 |
| Pentachlorophenol | MR | 5 | 2002 |
| Heptachlor epoxide | MR | 5 | 2002 |
| Heptachlor | MR | 5 | 2002 |
| Chlordane | MR | 5 | 2002 |
| Carbofuran | MR | 5 | 2002 |
| Atrazine | MR | 5 | 2002 |
| Aldicarb sulfone | MR | 5 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.