WALLOWA, CITY OF
PWS ID: OR4100930 · WALLOWA, Oregon 97885
Population Served
840
Total Violations
47
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 468
- County
- Wallowa
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 28
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 12 | 2025 |
| Coliform (TCR) | MR | 8 | 1994 |
| Lead and Copper Rule | MR | 7 | 2004 |
| Nitrate | MR | 5 | 2021 |
| Revised Total Coliform Rule | MON | 3 | 2020 |
| Coliform (TCR) | MCL | 3 | 2015 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1996 |
| Nitrite | MR | 1 | 2017 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.