STEWARTS ADDITION
PWS ID: OR4100619 · PENDLETON, Oregon 97801
Population Served
50
Total Violations
27
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 16
- County
- Umatilla
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 12
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 14 | 2025 |
| Lead and Copper Rule | MR | 5 | 2004 |
| Coliform (TCR) | MR | 3 | 2010 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Revised Total Coliform Rule | MON | 1 | 2025 |
| Coliform (TCR) | MCL | 1 | 2000 |
| Nitrate | MR | 1 | 2005 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.