UNION, CITY OF
PWS ID: OR4100915 · UNION, Oregon 97883
Population Served
2,162
Total Violations
28
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 958
- County
- Union
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 10 | 2015 |
| Coliform (TCR) | MR | 4 | 2011 |
| Nitrate | MR | 3 | 2002 |
| Consumer Confidence Rule | Other | 2 | 2023 |
| Lead and Copper Rule | MR | 1 | 1994 |
| Public Notice | Other | 1 | 2015 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Revised Total Coliform Rule | MON | 1 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.