B66/100
KING COUNTY WATER DISTRICT #54 — Water Quality Report 2026
Serving 5,037 people · Washington
Water Source
Purchased Surface Water
County
—
System ID
WA5339950
Violations
11
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: June 1, 2023 – June 30, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
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 KING COUNTY WATER DISTRICT #54
Is KING COUNTY WATER DISTRICT #54 water safe to drink?
KING COUNTY WATER DISTRICT #54 water receives a grade of B (66/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has KING COUNTY WATER DISTRICT #54 detected?
31 contaminants were tested in KING COUNTY WATER DISTRICT #54's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does KING COUNTY WATER DISTRICT #54 have any EPA violations?
Yes, KING COUNTY WATER DISTRICT #54 has 11 EPA violation(s) on record, with the most recent in 2023. Violation types include MCL, Other, MR. 5 are health-based violations.
How many people does KING COUNTY WATER DISTRICT #54 serve?
KING COUNTY WATER DISTRICT #54 serves approximately 5,037 people, Washington.
What type of water does KING COUNTY WATER DISTRICT #54 provide?
KING COUNTY WATER DISTRICT #54 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 WA5339950.
How does KING COUNTY WATER DISTRICT #54 compare to other utilities in Washington?
KING COUNTY WATER DISTRICT #54 scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Washington state page for a full comparison of water systems.