NORTH PLAINS WATER DEPARTMENT
PWS ID: OR4100576 · BEAVERTON, Oregon 97003
Population Served
3,663
Total Violations
38
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,749
- County
- Washington
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 33
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MR | 9 | 2010 |
| Total Haloacetic Acids (HAA5) | MR | 9 | 2010 |
| Lead and Copper Rule | MR | 5 | 1994 |
| Coliform (TCR) | MR | 4 | 2014 |
| Consumer Confidence Rule | Other | 3 | 2024 |
| Nitrate | MR | 2 | 2005 |
| Revised Total Coliform Rule | MON | 1 | 2019 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Arsenic | MR | 1 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.