CITY OF RAINIER
PWS ID: OR4100689 · RAINIER, Oregon 97048
Population Served
1,932
Total Violations
301
Health-Based Violations
133
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 919
- County
- Columbia
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 163
- Treatment Tech Violations
- 129
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 129 | 2000 |
| Surface Water Treatment Rule | MR | 42 | 2024 |
| Coliform (TCR) | MR | 22 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 12 | 2024 |
| TTHM | MR | 11 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | MR | 11 | 2024 |
| Revised Total Coliform Rule | MON | 5 | 2022 |
| Coliform (TCR) | MCL | 4 | 2001 |
| Xylenes, Total | MR | 4 | 2024 |
| Diquat | MR | 2 | 2018 |
| Endothall | MR | 2 | 2019 |
| Lead and Copper Rule | MR | 2 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2024 |
| Glyphosate | MR | 2 | 2017 |
| Chlordane | MR | 1 | 2017 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2017 |
| Pentachlorophenol | MR | 1 | 2017 |
| Benzo(a)pyrene | MR | 1 | 2017 |
| HEXACHLOROBENZENE | MR | 1 | 2017 |
| Heptachlor epoxide | MR | 1 | 2017 |
| LASSO | MR | 1 | 2017 |
| Atrazine | MR | 1 | 2017 |
| Dinoseb | MR | 1 | 2017 |
| OXAMYL | MR | 1 | 2017 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2017 |
| Methoxychlor | MR | 1 | 2017 |
| Endrin | MR | 1 | 2017 |
| cis-1,2-Dichloroethylene | MR | 1 | 2024 |
| o-Dichlorobenzene | MR | 1 | 2024 |
| p-Dichlorobenzene | MR | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.