HILLTOP WATER OWNERS ASSOCIATION
PWS ID: WA5333364 · Lummi Island, Washington 98262
Population Served
137
Total Violations
49
Health-Based Violations
14
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 57
- County
- Whatcom
- School/Daycare
- No
- MCL Violations
- 14
- Monitoring Violations
- 32
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MR | 22 | 2007 |
| Coliform (TCR) | MCL | 13 | 2006 |
| Coliform (TCR) | MR | 6 | 1994 |
| Nitrate | MR | 2 | 2009 |
| Revised Total Coliform Rule | MON | 2 | 2020 |
| Arsenic | MCL | 1 | 2010 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.