UPPER TWIN LAKES WATER COMPANY INC
PWS ID: ID1280194 · RATHDRUM, Idaho 83858
Population Served
227
Total Violations
47
Health-Based Violations
7
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 91
- County
- Kootenai
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 39
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 13 | 2018 |
| Lead and Copper Rule | MR | 10 | 2020 |
| Coliform (TCR) | MR | 6 | 2012 |
| Revised Total Coliform Rule | MON | 3 | 2016 |
| Revised Total Coliform Rule | TT | 3 | 2023 |
| Coliform (TCR) | MCL | 3 | 2000 |
| Nitrite | MR | 1 | 1993 |
| Barium | MR | 1 | 1993 |
| Fluoride | MR | 1 | 1993 |
| Chromium | MR | 1 | 1993 |
| Arsenic | MCL | 1 | 1999 |
| Selenium | MR | 1 | 1993 |
| Mercury | MR | 1 | 1993 |
| Cadmium | MR | 1 | 1993 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.