A100/100
CALIFORNIA WATER SERVICE - LIVERMORE — Water Quality Report 2026
Serving 60,414 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA0110003
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.007 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 CALIFORNIA WATER SERVICE - LIVERMORE
Is CALIFORNIA WATER SERVICE - LIVERMORE water safe to drink?
CALIFORNIA WATER SERVICE - LIVERMORE water receives a grade of A (100/100), 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 CALIFORNIA WATER SERVICE - LIVERMORE detected?
69 contaminants were tested in CALIFORNIA WATER SERVICE - LIVERMORE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CALIFORNIA WATER SERVICE - LIVERMORE have any EPA violations?
No, CALIFORNIA WATER SERVICE - LIVERMORE has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CALIFORNIA WATER SERVICE - LIVERMORE serve?
CALIFORNIA WATER SERVICE - LIVERMORE serves approximately 60,414 people, California.
What type of water does CALIFORNIA WATER SERVICE - LIVERMORE provide?
CALIFORNIA WATER SERVICE - 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 CA0110003.
How does CALIFORNIA WATER SERVICE - LIVERMORE compare to other utilities in California?
CALIFORNIA WATER SERVICE - LIVERMORE scores 100/100 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.