Drinking Water Compliance OS

SUNNYVALE, CA · Santa Clara County

CITY OF SUNNYVALE Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)

Violation history

  • Monitoring, Regular

    —

    Chromium

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Antimony, Total

    January 1, 2015 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Selenium

    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

    —

    trans-1,2-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

    —

    OXAMYL

    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

Contact

DE LA CRUZ, JOE

408-730-7561

SUNNYVALE, CA 94088