CALISTOGA, CA · Napa County
CALISTOGA, CITY OF Water System
Consumer Confidence Report status
CALISTOGA, CITY OF 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 CALISTOGA, CITY OF.
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)
- CA2810002
- System type
- Community Water System
- Population served
- 5,610
- Service connections
- 2,229
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
CALISTOGA, CITY OF is one of 278 community water systems in California in the 3,301 to 10,000 people size category, serving 5,610 people from surface water.
As of August 1, 2026, its federal record holds 3 entries between 2008 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.
None of the 3 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 Stage 2 Disinfectants and Disinfection Byproducts Rule and the Total Coliform Rules.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTotal Haloacetic Acids (HAA5)
July 1, 2023 – September 30, 2023
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
April 1, 2015 – June 30, 2015
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
December 1, 2008 – December 31, 2008
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2023 – September 30, 2023 | Maximum Contaminant Level Violation, Average | Total Haloacetic Acids (HAA5) | Health-based | Resolved |
| April 1, 2015 – June 30, 2015 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| December 1, 2008 – December 31, 2008 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- April 1, 2022State Administrative/Compliance Order without penalty issued5 linked violations
- September 18, 2018State Administrative/Compliance Order without penalty issued7 linked violations
- April 1, 2016State Compliance achieved9 linked violations
- January 31, 2009State Compliance achieved3 linked violations
Common questions
Is CALISTOGA, CITY OF required to publish a Consumer Confidence Report?
- Yes. CALISTOGA, CITY OF 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 CALISTOGA, CITY OF’s next Consumer Confidence Report due?
- CALISTOGA, CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CALISTOGA, CITY OF have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CALISTOGA, CITY OF.
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
RAYNER, DEREK
707-942-2828
CALISTOGA, CA 94515