A85/100
CITY OF SANTA ANA — Water Quality Report 2026
Serving 310,539 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3010038
Violations
7
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Other Violation
When: October 1, 2021 – July 1, 2022Rule: Total Coliform RuleEnforcement: Formal — state order issued
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 SANTA ANA
Is CITY OF SANTA ANA water safe to drink?
CITY OF SANTA ANA water receives a grade of A (85/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF SANTA ANA detected?
76 contaminants were tested in CITY OF SANTA ANA's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF SANTA ANA have any EPA violations?
Yes, CITY OF SANTA ANA has 7 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does CITY OF SANTA ANA serve?
CITY OF SANTA ANA serves approximately 310,539 people, California. The system provides water to 1 community: Santa Ana.
What type of water does CITY OF SANTA ANA provide?
CITY OF SANTA ANA 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 CA3010038.
How does CITY OF SANTA ANA compare to other utilities in California?
CITY OF SANTA ANA scores 85/100 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.