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CITY OF SUNNYVALE

California — Community Water System — PWSID: CA4310014

System Information

PWSIDCA4310014
System NameCITY OF SUNNYVALE
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CitySUNNYVALE
ZIP Code94088
AddressP.O. BOX 3707
OrganizationDE LA CRUZ, JOE
Phone408-730-7561

Population & Service

Population Served157,566
Service Connections28,372

Drinking Water Violations (141)

This water system has 141 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Mar 1, 2015 Mar 31, 2015 Surface Water Treatment Rule TT Yes No — — — Resolved Mar 31, 2015 Surface Water Treatment Rule
Mar 1, 2015 Mar 31, 2015 Surface Water Treatment Rule TT Yes No — — — Resolved Mar 31, 2015 Surface Water Treatment Rule
Jan 1, 2015 Dec 31, 2023 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2-DIBROMO-3-CHLOROPROPANE MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Barium MR No Yes — 2 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Dalapon MR No Yes — 0.2 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Atrazine MR No Yes — 0.003 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Atrazine MR No Yes — 0.003 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 ETHYLENE DIBROMIDE MR No Yes — 0.00005 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals
Jan 1, 2015 Dec 31, 2023 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2023 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2023 Inorganic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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