COE BONNEVILLE DAM
PWS ID: OR4101180 · CASCADE LOCKS, Oregon 97014
Population Served
109
Total Violations
48
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Federal
- Connections
- 22
- County
- Multnomah
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 43
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| COLIPHAGE | MR | 21 | 2021 |
| Coliform (TCR) | MR | 6 | 1999 |
| Nitrate | MR | 6 | 2009 |
| Consumer Confidence Rule | Other | 4 | 2003 |
| TTHM | MR | 4 | 2018 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2018 |
| Lead and Copper Rule | MR | 2 | 2021 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.