Public Water Partners

SUNNYVALE, CA · Santa Clara County

CITY OF SUNNYVALE Water System

Consumer Confidence Report status

CITY OF SUNNYVALE 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 SUNNYVALE.

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)
CA4310014
System type
Community Water System
Population served
157,566
Service connections
28,372
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

CITY OF SUNNYVALE is one of 92 community water systems in California in the more than 100,000 people size category, serving 157,566 people from surface water.

As of August 1, 2026, its federal record holds 46 entries in 2015, all of which EPA lists as closed. Nothing has been added since 2015.

All 46 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and inorganic chemicals.

Violation history

  • Monitoring, Regular

    —

    Barium

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Chromium

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Endrin

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Methoxychlor

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Diquat

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Endothall

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Picloram

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    LASSO

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    HEXACHLOROBENZENE

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    1,2-DIBROMO-3-CHLOROPROPANE

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    ETHYLENE DIBROMIDE

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Chlordane

    January 1, 2015 – December 31, 2023

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is CITY OF SUNNYVALE required to publish a Consumer Confidence Report?

Yes. CITY OF SUNNYVALE 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 SUNNYVALE’s next Consumer Confidence Report due?

CITY OF SUNNYVALE’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does CITY OF SUNNYVALE have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for CITY OF SUNNYVALE.

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

DE LA CRUZ, JOE

408-730-7561

SUNNYVALE, CA 94088