YAMHILL, CITY OF
PWS ID: OR4100968 · YAMHILL, Oregon 97148
Population Served
1,130
Total Violations
112
Health-Based Violations
59
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 616
- County
- Yamhill
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 50
- Treatment Tech Violations
- 59
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 59 | 2001 |
| Surface Water Treatment Rule | MR | 14 | 2024 |
| Lead and Copper Rule | MR | 13 | 2024 |
| Nitrate | MR | 8 | 1997 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2024 |
| Coliform (TCR) | MR | 1 | 1994 |
| Mercury | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Cadmium | MR | 1 | 1979 |
| Fluoride | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Arsenic | MR | 1 | 1979 |
| Revised Total Coliform Rule | MON | 1 | 2023 |
| Barium | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Consumer Confidence Rule | Other | 1 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.