A80/100
YELM CITY OF — Water Quality Report 2026
Serving 16,633 people · Washington
Water Source
Groundwater
County
—
System ID
WA5399350
Violations
9
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.60 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 2016.
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 YELM CITY OF
Is YELM CITY OF water safe to drink?
YELM CITY OF water receives a grade of A (80/100), which is considered excellent. 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 YELM CITY OF detected?
67 contaminants were tested in YELM CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does YELM CITY OF have any EPA violations?
Yes, YELM CITY OF has 9 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MR.
How many people does YELM CITY OF serve?
YELM CITY OF serves approximately 16,633 people, Washington.
What type of water does YELM CITY OF provide?
YELM CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5399350.
How does YELM CITY OF compare to other utilities in Washington?
YELM CITY OF scores 80/100 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.