A93/100
CITY OF ORANGE — Water Quality Report 2026
Serving 120,770 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3010027
Violations
1
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
1,4-dioxane | 0.469 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 ORANGE
Is CITY OF ORANGE water safe to drink?
CITY OF ORANGE water receives a grade of A (93/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF ORANGE detected?
76 contaminants were tested in CITY OF ORANGE's water. Notable contaminants include Lead (90th percentile), 1,4-dioxane. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CITY OF ORANGE have any EPA violations?
Yes, CITY OF ORANGE has 1 EPA violation(s) on record, with the most recent in 2018. Violation types include MR.
How many people does CITY OF ORANGE serve?
CITY OF ORANGE serves approximately 120,770 people, California. The system provides water to 1 community: Orange.
What type of water does CITY OF ORANGE provide?
CITY OF ORANGE 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 CA3010027.
How does CITY OF ORANGE compare to other utilities in California?
CITY OF ORANGE scores 93/100 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.