A91/100
EAST BAY MUD — Water Quality Report 2026
Serving 1,442,800 people · California
Water Source
Surface Water
County
—
System ID
CA0110005
Violations
5
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1995.
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 EAST BAY MUD
Is EAST BAY MUD water safe to drink?
EAST BAY MUD water receives a grade of A (91/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has EAST BAY MUD detected?
76 contaminants were tested in EAST BAY MUD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does EAST BAY MUD have any EPA violations?
Yes, EAST BAY MUD has 5 EPA violation(s) on record, with the most recent in 1995. Violation types include Other, MCL, MR. 1 are health-based violations.
How many people does EAST BAY MUD serve?
EAST BAY MUD serves approximately 1,442,800 people, California.
What type of water does EAST BAY MUD provide?
EAST BAY MUD sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA0110005.
How does EAST BAY MUD compare to other utilities in California?
EAST BAY MUD scores 91/100 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.