ROLLING HILLS-GLENCAIRN
PWS ID: WA5374000 · Oak Harbor, Washington 98277
Population Served
872
Total Violations
46
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 451
- County
- Island
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 40
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 8 | 2023 |
| Diquat | MR | 7 | 2007 |
| TTHM | MCL | 6 | 2025 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 4 | 2007 |
| ETHYLENE DIBROMIDE | MR | 4 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2024 |
| TTHM | MR | 3 | 2024 |
| Revised Total Coliform Rule | MON | 2 | 2024 |
| Barium | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Arsenic | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Selenium | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Lead and Copper Rule | MR | 1 | 2021 |
| Fluoride | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.