A97/100
CITY OF VACAVILLE — Water Quality Report 2026
Serving 97,000 people · California
Water Source
Surface Water
County
—
System ID
CA4810008
Violations
3
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2001.
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 VACAVILLE
Is CITY OF VACAVILLE water safe to drink?
CITY OF VACAVILLE water receives a grade of A (97/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF VACAVILLE detected?
69 contaminants were tested in CITY OF VACAVILLE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF VACAVILLE have any EPA violations?
Yes, CITY OF VACAVILLE has 3 EPA violation(s) on record, with the most recent in 2001. Violation types include MR, Other.
How many people does CITY OF VACAVILLE serve?
CITY OF VACAVILLE serves approximately 97,000 people, California. The system provides water to 1 community: Vacaville.
What type of water does CITY OF VACAVILLE provide?
CITY OF VACAVILLE sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA4810008.
How does CITY OF VACAVILLE compare to other utilities in California?
CITY OF VACAVILLE scores 97/100 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.