A96/100
CITY OF LIVERMORE — Water Quality Report 2026
Serving 38,892 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA0110011
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 250.00 µg/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 CITY OF LIVERMORE
Is CITY OF LIVERMORE water safe to drink?
CITY OF LIVERMORE water receives a grade of A (96/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF LIVERMORE detected?
69 contaminants were tested in CITY OF LIVERMORE's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF LIVERMORE have any EPA violations?
Yes, CITY OF LIVERMORE has 1 EPA violation(s) on record, with the most recent in 1993. Violation types include MR.
How many people does CITY OF LIVERMORE serve?
CITY OF LIVERMORE serves approximately 38,892 people, California. The system provides water to 1 community: Livermore.
What type of water does CITY OF LIVERMORE provide?
CITY OF LIVERMORE 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 CA0110011.
How does CITY OF LIVERMORE compare to other utilities in California?
CITY OF LIVERMORE scores 96/100 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.