CLATSKANIE, CITY OF
PWS ID: OR4100194 · CLATSKANIE, Oregon 97016
Population Served
2,188
Total Violations
21
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 922
- County
- Columbia
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 16
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 4 | 2011 |
| Consumer Confidence Rule | Other | 3 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2024 |
| Cadmium | MR | 1 | 1979 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Selenium | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| Nitrate | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| TTHM | MR | 1 | 2024 |
| Mercury | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.