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Gswc-South San Gabriel

Published drinking-water records and contacts for Gswc-South San Gabriel. System CA1910223. Review sources and dates; not a real-time water assessment.

System ID
CA1910223
State or territory
CA
Published population served
26240
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/L2024-07-09USGVMWD Intertie / 1910223827
4:2 FTS< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
6:2 FTS< 0.005 µg/L0.005 µg/L2024-07-09USGVMWD Intertie / 1910223827
8:2 FTS< 0.005 µg/L0.005 µg/L2024-07-09USGVMWD Intertie / 1910223827
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-07-09USGVMWD Intertie / 1910223827
ADONA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
HFPO-DA< 0.005 µg/L0.005 µg/L2024-07-09USGVMWD Intertie / 1910223827
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-07-09USGVMWD Intertie / 1910223827
NFDHA< 0.02 µg/L0.02 µg/L2024-07-09USGVMWD Intertie / 1910223827
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFBA< 0.005 µg/L0.005 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFBS< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFDA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFDoA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFEESA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFHpA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFHpS< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFHxA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFHxS< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFMBA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFMPA< 0.004 µg/L0.004 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFNA< 0.004 µg/L0.004 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFOA< 0.004 µg/L0.004 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFOS< 0.004 µg/L0.004 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFPeA< 0.003 µg/L0.003 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFPeS< 0.004 µg/L0.004 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFTA< 0.008 µg/L0.008 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFTrDA< 0.007 µg/L0.007 µg/L2024-07-09USGVMWD Intertie / 1910223827
PFUnA< 0.002 µg/L0.002 µg/L2024-07-09USGVMWD Intertie / 1910223827
lithium40 µg/L9 µg/L2024-07-09USGVMWD Intertie / 1910223827

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) 0.00059 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0.00078 mg/L2018-01-01 – 2020-12-312026Q3
Lead (PB90) 0 mg/L2015-01-01 – 2017-12-312026Q3
Lead (PB90) 0 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0.002 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.001 mg/L2003-01-01 – 2005-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
XYLENE, META AND PARA< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
CHLOROBENZENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
STYRENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
1,1,2,2-TETRACHLOROETHANE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
PERCHLORATE0.87 UG/L2026-07-07FINAL EFFLUENT & BEFORE PT.OF INTRO / California DDW laboratory results
CARBON TETRACHLORIDE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
O-DICHLOROBENZENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
TRICHLOROFLUOROMETHANE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
CIS-1,2-DICHLOROETHYLENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
ETHYLBENZENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
1,3-DICHLOROPROPENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / California DDW laboratory results
1,2,4-TRICHLOROBENZENE< 0.500000000 UG/L2026-07-07B1 LEAD - EFFLUENT PORT / 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)

Zakhari, George: 760-515-8322

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