ARRAH WANNA WATER COMPANY
PWS ID: OR4101265 · WELCHES, Oregon 97067
Population Served
40
Total Violations
218
Health-Based Violations
82
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 22
- County
- Clackamas
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 72
- Treatment Tech Violations
- 77
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | TT | 77 | 2018 |
| Surface Water Treatment Rule | MR | 38 | 2017 |
| Coliform (TCR) | MR | 26 | 2005 |
| Coliform (TCR) | MCL | 5 | 1995 |
| Nitrate | MR | 5 | 2018 |
| Public Notice | Other | 3 | 2017 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2005 |
| Revised Total Coliform Rule | MON | 1 | 2017 |
| Long Term 2 Enhanced Surface Water Treatment Rule | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.