A88/100
NORTHSHORE UTILITY DISTRICT — Water Quality Report 2026
Serving 105,105 people · Washington
Water Source
Purchased Surface Water
County
—
System ID
WA5340800
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.036 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 NORTHSHORE UTILITY DISTRICT
Is NORTHSHORE UTILITY DISTRICT water safe to drink?
NORTHSHORE UTILITY DISTRICT water receives a grade of A (88/100), which is considered excellent. Out of 69 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has NORTHSHORE UTILITY DISTRICT detected?
69 contaminants were tested in NORTHSHORE UTILITY DISTRICT's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does NORTHSHORE UTILITY DISTRICT have any EPA violations?
Yes, NORTHSHORE UTILITY DISTRICT has 4 EPA violation(s) on record, with the most recent in 2015. Violation types include Other, MR.
How many people does NORTHSHORE UTILITY DISTRICT serve?
NORTHSHORE UTILITY DISTRICT serves approximately 105,105 people, Washington.
What type of water does NORTHSHORE UTILITY DISTRICT provide?
NORTHSHORE UTILITY DISTRICT sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is WA5340800.
How does NORTHSHORE UTILITY DISTRICT compare to other utilities in Washington?
NORTHSHORE UTILITY DISTRICT scores 88/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Washington state page for a full comparison of water systems.