PILOT ROCK, CITY OF
PWS ID: OR4100626 · PILOT ROCK, Oregon 97868
Population Served
1,326
Total Violations
73
Health-Based Violations
17
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 650
- County
- Umatilla
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 53
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 33 | 2014 |
| Coliform (TCR) | MCL | 17 | 2011 |
| Nitrate | MR | 5 | 2011 |
| Consumer Confidence Rule | Other | 2 | 2024 |
| Heptachlor | MR | 1 | 1996 |
| HEXACHLOROBENZENE | MR | 1 | 1996 |
| Simazine | MR | 1 | 1996 |
| Revised Total Coliform Rule | MON | 1 | 2019 |
| E. COLI | MR | 1 | 2024 |
| BHC-GAMMA | MR | 1 | 1996 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Benzo(a)pyrene | MR | 1 | 1996 |
| Atrazine | MR | 1 | 1996 |
| Heptachlor epoxide | MR | 1 | 1996 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 1996 |
| Di(2-ethylhexyl) adipate | MR | 1 | 1996 |
| LASSO | MR | 1 | 1996 |
| Methoxychlor | MR | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.