HIDDEN VALLEY OWNER LLC
PWS ID: MT0000035 · SAN DIEGO, Montana 92101
Population Served
200
Total Violations
52
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 84
- County
- Gallatin
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 41
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 16 | 2009 |
| Lead and Copper Rule | MR | 7 | 2011 |
| Coliform (TCR) | MCL | 4 | 2015 |
| Lead and Copper Rule | TT | 4 | 2006 |
| Consumer Confidence Rule | Other | 3 | 2007 |
| E. COLI | MR | 3 | 2015 |
| Chlorine | MR | 3 | 2017 |
| Nitrate-Nitrite | MR | 3 | 2023 |
| Nitrate | MR | 2 | 1994 |
| Selenium | MR | 1 | 1981 |
| Mercury | MR | 1 | 1981 |
| Fluoride | MR | 1 | 1981 |
| Cadmium | MR | 1 | 1981 |
| Barium | MR | 1 | 1981 |
| Chromium | MR | 1 | 1981 |
| Arsenic | MR | 1 | 1981 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.