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PublicWater Watch

City of Sunnyvale

Published drinking-water records and contacts for City of Sunnyvale. System CA4310014. Review sources and dates; not a real-time water assessment.

System ID
CA4310014
State or territory
CA
Published population served
157566
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2025-01-22SCVWD Intertie / 4310014014
4:2 FTS< 0.003 µg/L0.003 µg/L2025-01-22SFPUC Intertie / 4310014017
6:2 FTS< 0.005 µg/L0.005 µg/L2025-01-22SFPUC Intertie / 4310014017
8:2 FTS< 0.005 µg/L0.005 µg/L2025-01-22SCVWD Intertie / 4310014014
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-01-22SCVWD Intertie / 4310014014
ADONA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
HFPO-DA< 0.005 µg/L0.005 µg/L2025-01-22SCVWD Intertie / 4310014014
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-01-22SFPUC Intertie / 4310014017
NFDHA< 0.02 µg/L0.02 µg/L2025-01-22SCVWD Intertie / 4310014014
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-01-22SCVWD Intertie / 4310014014
PFBA< 0.005 µg/L0.005 µg/L2025-01-22SFPUC Intertie / 4310014017
PFBS< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFDA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFDoA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFEESA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFHpA< 0.003 µg/L0.003 µg/L2025-01-22SFPUC Intertie / 4310014017
PFHpS< 0.003 µg/L0.003 µg/L2025-01-22SFPUC Intertie / 4310014017
PFHxA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFHxS< 0.003 µg/L0.003 µg/L2025-01-22SFPUC Intertie / 4310014017
PFMBA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFMPA< 0.004 µg/L0.004 µg/L2025-01-22SFPUC Intertie / 4310014017
PFNA< 0.004 µg/L0.004 µg/L2025-01-22SCVWD Intertie / 4310014014
PFOA< 0.004 µg/L0.004 µg/L2025-01-22SFPUC Intertie / 4310014017
PFOS< 0.004 µg/L0.004 µg/L2025-01-22SFPUC Intertie / 4310014017
PFPeA< 0.003 µg/L0.003 µg/L2025-01-22SCVWD Intertie / 4310014014
PFPeS< 0.004 µg/L0.004 µg/L2025-01-22SFPUC Intertie / 4310014017
PFTA< 0.008 µg/L0.008 µg/L2025-01-22SFPUC Intertie / 4310014017
PFTrDA< 0.007 µg/L0.007 µg/L2025-01-22SCVWD Intertie / 4310014014
PFUnA< 0.002 µg/L0.002 µg/L2025-01-22SFPUC Intertie / 4310014017
lithium< 9 µg/L9 µg/L2025-01-22SCVWD Intertie / 4310014014

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0 mg/L2023-01-01 – 2025-12-312026Q3
Lead (PB90) 0 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.001 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0.001 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
CHROMIUM, HEX0.39 UG/L2026-06-16ORTEGA WELL 11 / California DDW laboratory results
CHROMIUM, HEX2.5 UG/L2026-06-16HAMILTON 03 / California DDW laboratory results
CHROMIUM, HEX3.2 UG/L2026-06-16HAMILTON 02 / California DDW laboratory results
CHROMIUM, HEX1.2 UG/L2026-06-16WESTMOOR 01 / California DDW laboratory results
CHROMIUM, HEX2.0 UG/L2026-06-16SERRA / California DDW laboratory results
CHROMIUM, HEX0.41 UG/L2026-06-16RAYNOR WELL / California DDW laboratory results
PERFLUOROHEPTANESULFONIC ACID (PFHPS)< 2.000000000 NG/L2026-05-13SERRA / California DDW laboratory results
9CL-PF3ONS< 2.000000000 NG/L2026-05-13SERRA / California DDW laboratory results
PERFLUOROHEPTANESULFONIC ACID (PFHPS)< 2.000000000 NG/L2026-05-13HAMILTON 02 / California DDW laboratory results
NONAFLUORO NFDHA< 2.000000000 NG/L2026-05-13RAYNOR WELL / California DDW laboratory results
PERFLUOROHEPTANOIC ACID (PFHPA)< 2.000000000 NG/L2026-05-13WESTMOOR 01 / California DDW laboratory results
TOTAL HALOACETIC ACIDS (HAA5)15 UG/L2026-05-13DBPR Sample / California DDW laboratory results

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

De La Cruz, Joe: 408-730-7561

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records