UPS-HERMISTON
PWS ID: OR4105955 · SEATTLE, Oregon 98108
Population Served
100
Total Violations
79
Health-Based Violations
26
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Umatilla
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 49
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 34 | 2015 |
| Coliform (TCR) | MCL | 26 | 2016 |
| Nitrate | MR | 7 | 2008 |
| E. COLI | MR | 5 | 2024 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Public Notice | Other | 2 | 2015 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.