RIO VISTA, CA · Solano County
CITY OF RIO VISTA Water System
Consumer Confidence Report status
CITY OF RIO VISTA 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 CITY OF RIO VISTA.
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)
- CA4810004
- System type
- Community Water System
- Population served
- 10,489
- Service connections
- 5,646
- Ownership
- local government
- Water source
- groundwater (wells)
CITY OF RIO VISTA is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 10,489 people from groundwater.
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
- February 27, 2018State Compliance achieved1 linked violation
- February 27, 2018State Compliance achieved2 linked violations
- February 28, 1995State Compliance achieved2 linked violations
- February 8, 1995State Violation/Reminder Notice1 linked violation
- October 17, 1994State Violation/Reminder Notice2 linked violations
- July 30, 1994State Compliance achieved2 linked violations
Common questions
Is CITY OF RIO VISTA required to publish a Consumer Confidence Report?
- Yes. CITY OF RIO VISTA 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 CITY OF RIO VISTA’s next Consumer Confidence Report due?
- CITY OF RIO VISTA’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CITY OF RIO VISTA have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CITY OF RIO VISTA.
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
MALCOLM, GREG
707-374-6451
RIO VISTA, CA 94571-1842