F0/100
CITY OF DAVIS — Water Quality Report 2026
Serving 67,457 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA5710001
Violations
35
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2005.
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 DAVIS
Is CITY OF DAVIS water safe to drink?
CITY OF DAVIS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 35 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF DAVIS detected?
76 contaminants were tested in CITY OF DAVIS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF DAVIS have any EPA violations?
Yes, CITY OF DAVIS has 35 EPA violation(s) on record, with the most recent in 2005. Violation types include MCL. 35 are health-based violations.
How many people does CITY OF DAVIS serve?
CITY OF DAVIS serves approximately 67,457 people, California. The system provides water to 1 community: Davis.
What type of water does CITY OF DAVIS provide?
CITY OF DAVIS 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 CA5710001.
How does CITY OF DAVIS compare to other utilities in California?
CITY OF DAVIS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.