KELSO WATER ASSN
PWS ID: OR4100134 · SANDY, Oregon 97055
Population Served
300
Total Violations
60
Health-Based Violations
19
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 102
- County
- Clackamas
- School/Daycare
- No
- MCL Violations
- 19
- Monitoring Violations
- 34
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 22 | 2014 |
| Coliform (TCR) | MCL | 19 | 2003 |
| Consumer Confidence Rule | Other | 4 | 2025 |
| Revised Total Coliform Rule | MON | 3 | 2020 |
| Lead and Copper Rule | MR | 2 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2024 |
| TTHM | MR | 2 | 2024 |
| Arsenic | MR | 1 | 2002 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.