D38/100
OLYMPIA CITY OF — Water Quality Report 2026
Serving 113,584 people · Washington
Water Source
Groundwater
County
—
System ID
WA5363450
Violations
27
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.80 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.006 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.004 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2025 – August 19, 2025Enforcement: 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 OLYMPIA CITY OF
Is OLYMPIA CITY OF water safe to drink?
OLYMPIA CITY OF water receives a grade of D (38/100), which is considered poor. 3 contaminant(s) exceed EPA legal limits and 27 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has OLYMPIA CITY OF detected?
67 contaminants were tested in OLYMPIA CITY OF's water. Notable contaminants include PFOS, Copper (90th percentile), PFOA, Lead (90th percentile). 3 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does OLYMPIA CITY OF have any EPA violations?
Yes, OLYMPIA CITY OF has 27 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, MR. 2 are health-based violations.
How many people does OLYMPIA CITY OF serve?
OLYMPIA CITY OF serves approximately 113,584 people, Washington.
What type of water does OLYMPIA CITY OF provide?
OLYMPIA CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5363450.
How does OLYMPIA CITY OF compare to other utilities in Washington?
OLYMPIA CITY OF scores 38/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Washington state page for a full comparison of water systems.