GRAND COULEE WATER DEPT CITY OF
PWS ID: WA5328700 · Grand Coulee, Washington 99133
Population Served
1,428
Total Violations
11
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 662
- County
- Grant
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 2
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 5 | 1992 |
| Consumer Confidence Rule | Other | 1 | 2010 |
| Lead and Copper Rule | MR | 1 | 2000 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.