SAN JOSE, CA · Santa Clara County
SAN JOSE WATER Water System
Consumer Confidence Report status
SAN JOSE WATER 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 SAN JOSE WATER.
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)
- CA4310011
- System type
- Community Water System
- Population served
- 1,039,920
- Service connections
- 237,130
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
SAN JOSE WATER is the fourth largest community water system in California, serving 1,039,920 people from surface water.
As of August 1, 2026, its federal record holds 1 entry in 2023, all of which EPA lists as closed. Nothing has been added since 2023.
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 Surface Water Treatment Rules.
Violation history
Treatment Technique (SWTR and GWR)
Health-basedSurface Water Treatment Rule
June 1, 2023 – June 30, 2023
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 1, 2023 – June 30, 2023 | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- August 16, 2023State Compliance achieved1 linked violation
- June 13, 2023State Administrative/Compliance Order without penalty issued1 linked violation
- July 29, 2020State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- April 3, 2020State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
- May 31, 2017State Compliance achieved1 linked violation
- May 1, 2017State Administrative/Compliance Order without penalty issued1 linked violation
- June 30, 2000State Compliance achieved1 linked violation
- September 19, 1997State Compliance Meeting conducted3 linked violations
- September 17, 1997State Public Notification received2 linked violations
Common questions
Is SAN JOSE WATER required to publish a Consumer Confidence Report?
- Yes. SAN JOSE WATER 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 SAN JOSE WATER’s next Consumer Confidence Report due?
- SAN JOSE WATER’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does SAN JOSE WATER have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for SAN JOSE WATER.
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
DELORENZO, SUZANNE
408-918-7254
SAN JOSE, CA 95128