B74/100
ELLENSBURG WATER DEPT — Water Quality Report 2026
Serving 20,900 people · Washington
Water Source
Groundwater
County
—
System ID
WA5322950
Violations
11
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 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 ELLENSBURG WATER DEPT
Is ELLENSBURG WATER DEPT water safe to drink?
ELLENSBURG WATER DEPT water receives a grade of B (74/100), which is considered good. Out of 67 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ELLENSBURG WATER DEPT detected?
67 contaminants were tested in ELLENSBURG WATER DEPT's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does ELLENSBURG WATER DEPT have any EPA violations?
Yes, ELLENSBURG WATER DEPT has 11 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does ELLENSBURG WATER DEPT serve?
ELLENSBURG WATER DEPT serves approximately 20,900 people, Washington.
What type of water does ELLENSBURG WATER DEPT provide?
ELLENSBURG WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5322950.
How does ELLENSBURG WATER DEPT compare to other utilities in Washington?
ELLENSBURG WATER DEPT scores 74/100 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.