F16/100
BRENTWOOD — Water Quality Report 2026
Serving 64,513 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA0710004
Violations
20
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 BRENTWOOD
Is BRENTWOOD water safe to drink?
BRENTWOOD water receives a grade of F (16/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 20 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BRENTWOOD detected?
69 contaminants were tested in BRENTWOOD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does BRENTWOOD have any EPA violations?
Yes, BRENTWOOD has 20 EPA violation(s) on record, with the most recent in 2007. Violation types include MCL, MR, Other. 16 are health-based violations.
How many people does BRENTWOOD serve?
BRENTWOOD serves approximately 64,513 people, California. The system provides water to 1 community: Brentwood.
What type of water does BRENTWOOD provide?
BRENTWOOD 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 CA0710004.
How does BRENTWOOD compare to other utilities in California?
BRENTWOOD scores 16/100 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.