POSTS TRAILER COURT
PWS ID: MT0000554 · LIBBY, Montana 59923
Population Served
45
Total Violations
72
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 20
- County
- Lincoln
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 41
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 16 | 2025 |
| Lead and Copper Rule | MR | 14 | 2024 |
| Coliform (TCR) | MCL | 10 | 2015 |
| Coliform (TCR) | MR | 3 | 2010 |
| Nitrate-Nitrite | MR | 3 | 2024 |
| Revised Total Coliform Rule | MON | 3 | 2025 |
| Asbestos | MR | 2 | 2011 |
| Chromium | MR | 2 | 1982 |
| Arsenic | MR | 2 | 1982 |
| Nitrate | MR | 2 | 1982 |
| Mercury | MR | 2 | 1982 |
| Cadmium | MR | 2 | 1982 |
| Barium | MR | 2 | 1982 |
| Selenium | MR | 2 | 1982 |
| Fluoride | MR | 2 | 1982 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.