GRAHAM HILL MUTUAL WATER CO INC
PWS ID: WA5328650 · GRAHAM, Washington 98338-7190
Population Served
1,474
Total Violations
21
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 448
- County
- Pierce
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 4 | 2004 |
| OXAMYL | MR | 2 | 2008 |
| Aldicarb sulfoxide | MR | 2 | 2008 |
| Aldicarb | MR | 2 | 2008 |
| Aldicarb sulfone | MR | 2 | 2008 |
| Carbofuran | MR | 2 | 2008 |
| Nitrate | MR | 1 | 2009 |
| Consumer Confidence Rule | Other | 1 | 2023 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Coliform (TCR) | MR | 1 | 1992 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.