STEVENS CO PUD - HALFMOON RANCHOS
PWS ID: WA5330420 · Loon Lake, Washington 99148
Population Served
216
Total Violations
43
Health-Based Violations
16
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 72
- County
- Spokane
- School/Daycare
- No
- MCL Violations
- 16
- Monitoring Violations
- 26
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 16 | 1992 |
| Nitrate | MR | 11 | 2022 |
| Coliform (TCR) | MR | 7 | 2013 |
| Mercury | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.