A92/100
EUREKA, CITY OF — Water Quality Report 2026
Serving 27,078 people · California
Water Source
Purchased Groundwater
County
—
System ID
CA1210004
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
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 1993.
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 EUREKA, CITY OF
Is EUREKA, CITY OF water safe to drink?
EUREKA, CITY OF water receives a grade of A (92/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has EUREKA, CITY OF detected?
66 contaminants were tested in EUREKA, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does EUREKA, CITY OF have any EPA violations?
Yes, EUREKA, CITY OF has 1 EPA violation(s) on record, with the most recent in 1993. Violation types include TT. 1 are health-based violations.
How many people does EUREKA, CITY OF serve?
EUREKA, CITY OF serves approximately 27,078 people, California. The system provides water to 1 community: Eureka.
What type of water does EUREKA, CITY OF provide?
EUREKA, CITY OF sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1210004.
How does EUREKA, CITY OF compare to other utilities in California?
EUREKA, CITY OF scores 92/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.