26 MARKET
PWS ID: OR4191612 · HILLSBORO, Oregon 97124
Population Served
90
Total Violations
67
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Washington
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 64
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 53 | 2007 |
| Nitrate | MR | 8 | 2006 |
| Coliform (TCR) | MCL | 2 | 2003 |
| E. COLI | MR | 2 | 2023 |
| Revised Total Coliform Rule | MON | 1 | 2023 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.