ROLLING HILLS-GLENCAIRN
PWSID: WA5374000 · Oak Harbor, WA · Serves 872 people
ROLLING HILLS-GLENCAIRN has 17 health-based violations out of 17 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
ROLLING HILLS-GLENCAIRN (PWSID WA5374000) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 872 people in Oak Harbor, WA, and is subject to primacy enforcement by the Washington drinking-water program.
The system's federal compliance record contains 17 total violations, with 17 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Total Trihalomethanes (TTHM). Recorded violations span 2023–2025.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Washington state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- WA5374000
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Oak Harbor, WA
- Population Served
- 872
- Health Violations
- Yes (17)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Total Trihalomethanes (TTHM) | 17 | 17 |
Violation History (17)
| Contaminant | Health | Date |
|---|---|---|
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2025 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2025 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jul 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jul 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jul 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Apr 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Apr 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Jan 1, 2024 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2023 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2023 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2023 |
| Total Trihalomethanes (TTHM) | Yes | Oct 1, 2023 |
Frequently Asked Questions
Is ROLLING HILLS-GLENCAIRN water safe to drink?
How many people does ROLLING HILLS-GLENCAIRN serve?
What violations does ROLLING HILLS-GLENCAIRN have?
What contaminants have been found in ROLLING HILLS-GLENCAIRN water?
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.