D30/100
COUPEVILLE TOWN OF — Water Quality Report 2026
Serving 4,077 people · Washington
Water Source
Groundwater
County
—
System ID
WA5315550
Violations
59
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.010 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About COUPEVILLE TOWN OF
Is COUPEVILLE TOWN OF water safe to drink?
COUPEVILLE TOWN OF water receives a grade of D (30/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 59 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has COUPEVILLE TOWN OF detected?
31 contaminants were tested in COUPEVILLE TOWN OF's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does COUPEVILLE TOWN OF have any EPA violations?
Yes, COUPEVILLE TOWN OF has 59 EPA violation(s) on record, with the most recent in 2020. Violation types include MON, Other, MR.
How many people does COUPEVILLE TOWN OF serve?
COUPEVILLE TOWN OF serves approximately 4,077 people, Washington.
What type of water does COUPEVILLE TOWN OF provide?
COUPEVILLE TOWN OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5315550.
How does COUPEVILLE TOWN OF compare to other utilities in Washington?
COUPEVILLE TOWN OF scores 30/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Washington state page for a full comparison of water systems.