OAKLAND, CA · Alameda County
EAST BAY MUD Water System
Consumer Confidence Report status
EAST BAY MUD must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for EAST BAY MUD.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA0110005
- System type
- Community Water System
- Population served
- 1,442,800
- Service connections
- 392,875
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
EAST BAY MUD is the second largest community water system in California, serving 1,442,800 people from surface water.
As of August 1, 2026, EPA's published records contain no violations for this system.
Violation history
No violations on record for this system.
Enforcement actions
- January 10, 1996State Compliance achieved1 linked violation
- December 18, 1995State Bilateral Compliance Agreement signed1 linked violation
- August 31, 1994State Compliance achieved1 linked violation
Common questions
Is EAST BAY MUD required to publish a Consumer Confidence Report?
- Yes. EAST BAY MUD is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is EAST BAY MUD’s next Consumer Confidence Report due?
- EAST BAY MUD’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does EAST BAY MUD have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for EAST BAY MUD.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
CORTEZ, ROBERTO
510-287-1035
OAKLAND, CA 94607-4246