COSMOPOLIS WATER DEPARTMENT
PWS ID: WA5315050 · Raymond, Washington 98577
Population Served
1,812
Total Violations
62
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 783
- County
- Grays Harbor
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MR | 15 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 15 | 2019 |
| Lead and Copper Rule | MR | 14 | 2021 |
| Consumer Confidence Rule | Other | 7 | 2023 |
| Chromium | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| Nitrate | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Asbestos | MR | 1 | 2011 |
| Cadmium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.