A100/100
CITY OF MILLBRAE — Water Quality Report 2026
Serving 22,795 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA4110018
Violations
0
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 MILLBRAE
Is CITY OF MILLBRAE water safe to drink?
CITY OF MILLBRAE water receives a grade of A (100/100), 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 MILLBRAE detected?
69 contaminants were tested in CITY OF MILLBRAE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF MILLBRAE have any EPA violations?
No, CITY OF MILLBRAE has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CITY OF MILLBRAE serve?
CITY OF MILLBRAE serves approximately 22,795 people, California. The system provides water to 1 community: Millbrae.
What type of water does CITY OF MILLBRAE provide?
CITY OF MILLBRAE 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 CA4110018.
How does CITY OF MILLBRAE compare to other utilities in California?
CITY OF MILLBRAE scores 100/100 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.