BRISBANE, CA · San Mateo County
GUADALUPE VALLEY MID Water System
Consumer Confidence Report status
GUADALUPE VALLEY MID 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 GUADALUPE VALLEY MID.
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)
- CA4110005
- System type
- Community Water System
- Population served
- 1,472
- Service connections
- 749
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
GUADALUPE VALLEY MID is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 1,472 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
- December 24, 2004State Compliance achieved1 linked violation
Common questions
Is GUADALUPE VALLEY MID required to publish a Consumer Confidence Report?
- Yes. GUADALUPE VALLEY MID 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 GUADALUPE VALLEY MID’s next Consumer Confidence Report due?
- GUADALUPE VALLEY MID’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GUADALUPE VALLEY MID have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for GUADALUPE VALLEY MID.
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
BOZORGINIA, MAZ
415-508-2131
BRISBANE, CA 94005