Rock Island Water Dept City of
PWS ID: WA5373401 · Rock Island, Washington 98850
Population Served
3,226
Total Violations
15
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 540
- County
- Douglas
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 8 | 2016 |
| Nitrate | MR | 4 | 2022 |
| Consumer Confidence Rule | Other | 1 | 2024 |
| Coliform (TCR) | MCL | 1 | 1994 |
| Lead and Copper Rule | MR | 1 | 2000 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.