A87/100
ALDERWOOD WATER DISTRICT — Water Quality Report 2026
Serving 200,000 people · Washington
Water Source
Purchased Surface Water
County
—
System ID
WA5301300
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.028 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1992.
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 ALDERWOOD WATER DISTRICT
Is ALDERWOOD WATER DISTRICT water safe to drink?
ALDERWOOD WATER DISTRICT water receives a grade of A (87/100), which is considered excellent. Out of 76 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ALDERWOOD WATER DISTRICT detected?
76 contaminants were tested in ALDERWOOD WATER DISTRICT's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does ALDERWOOD WATER DISTRICT have any EPA violations?
Yes, ALDERWOOD WATER DISTRICT has 5 EPA violation(s) on record, with the most recent in 1992. Violation types include MR.
How many people does ALDERWOOD WATER DISTRICT serve?
ALDERWOOD WATER DISTRICT serves approximately 200,000 people, Washington.
What type of water does ALDERWOOD WATER DISTRICT provide?
ALDERWOOD WATER 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 WA5301300.
How does ALDERWOOD WATER DISTRICT compare to other utilities in Washington?
ALDERWOOD WATER DISTRICT scores 87/100 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.