A84/100
UC - DAVIS — Water Quality Report 2026
Serving 49,616 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA5710009
Violations
4
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2022 – August 28, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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 UC - DAVIS
Is UC - DAVIS water safe to drink?
UC - DAVIS water receives a grade of A (84/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has UC - DAVIS detected?
69 contaminants were tested in UC - DAVIS's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does UC - DAVIS have any EPA violations?
Yes, UC - DAVIS has 4 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, MCL. 3 are health-based violations.
How many people does UC - DAVIS serve?
UC - DAVIS serves approximately 49,616 people, California.
What type of water does UC - DAVIS provide?
UC - 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 CA5710009.
How does UC - DAVIS compare to other utilities in California?
UC - DAVIS scores 84/100 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.