PALO ALTO, CA · Santa Clara County
CITY OF PALO ALTO Water System
Consumer Confidence Report status
CITY OF PALO ALTO 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 PALO ALTO.
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)
- CA4310009
- System type
- Community Water System
- Population served
- 67,231
- Service connections
- 19,949
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CITY OF PALO ALTO is one of 376 community water systems in California in the 10,001 to 100,000 people size category, serving 67,231 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 2012, all of which EPA lists as closed. Nothing has been added since 2012.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
May 1, 2012 – May 31, 2012
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 1, 2012 – May 31, 2012 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- April 21, 2015State Administrative/Compliance Order without penalty issued6 linked violations
- June 22, 2012State Compliance achieved2 linked violations
- September 7, 2010State Administrative/Compliance Order without penalty issued1 linked violation
- August 31, 2010State Compliance achieved6 linked violations
- April 18, 1995State Public Notification requested5 linked violations
Common questions
Is CITY OF PALO ALTO required to publish a Consumer Confidence Report?
- Yes. CITY OF PALO ALTO 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 PALO ALTO’s next Consumer Confidence Report due?
- CITY OF PALO ALTO’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CITY OF PALO ALTO have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CITY OF PALO ALTO.
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
ZUCCA, MATT
650-329-2639
PALO ALTO, CA 94303