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Golden State Water Co - Barstow

Published drinking-water records and contacts for Golden State Water Co - Barstow. System CA3610043. Review sources and dates; not a real-time water assessment.

System ID
CA3610043
State or territory
CA
Published population served
32547
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/L2023-09-27Arrowhead Plant / 3610043807
4:2 FTS< 0.003 µg/L0.003 µg/L2023-09-27Agate Plant / 3610043803
6:2 FTS< 0.005 µg/L0.005 µg/L2023-09-27Agate Plant / 3610043803
8:2 FTS< 0.005 µg/L0.005 µg/L2023-09-27Bradshaw Plant / 3610043802
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2023-09-27Agate Plant / 3610043803
ADONA< 0.003 µg/L0.003 µg/L2023-09-27Bradshaw Plant / 3610043802
HFPO-DA< 0.005 µg/L0.005 µg/L2023-09-27Agate Plant / 3610043803
NEtFOSAA< 0.005 µg/L0.005 µg/L2023-09-27Bradshaw Plant / 3610043802
NFDHA< 0.02 µg/L0.02 µg/L2023-09-27Bradshaw Plant / 3610043802
NMeFOSAA< 0.006 µg/L0.006 µg/L2023-09-27Arrowhead Plant / 3610043807
PFBA< 0.005 µg/L0.005 µg/L2023-09-27Glenn Road Plant / 3610043805
PFBS< 0.003 µg/L0.003 µg/L2023-09-27Bradshaw Plant / 3610043802
PFDA< 0.003 µg/L0.003 µg/L2023-09-27Bradshaw Plant / 3610043802
PFDoA< 0.003 µg/L0.003 µg/L2023-09-27Arrowhead Plant / 3610043807
PFEESA< 0.003 µg/L0.003 µg/L2023-09-27Arrowhead Plant / 3610043807
PFHpA< 0.003 µg/L0.003 µg/L2023-09-27Agate Plant / 3610043803
PFHpS< 0.003 µg/L0.003 µg/L2023-09-27Glenn Road Plant / 3610043805
PFHxA< 0.003 µg/L0.003 µg/L2023-09-27Arrowhead Plant / 3610043807
PFHxS0.0050 µg/L0.003 µg/L2023-09-27Glenn Road Plant / 3610043805
PFMBA< 0.003 µg/L0.003 µg/L2023-09-27Arrowhead Plant / 3610043807
PFMPA< 0.004 µg/L0.004 µg/L2023-09-27Agate Plant / 3610043803
PFNA< 0.004 µg/L0.004 µg/L2023-09-27Agate Plant / 3610043803
PFOA< 0.004 µg/L0.004 µg/L2023-09-27Arrowhead Plant / 3610043807
PFOS< 0.004 µg/L0.004 µg/L2023-09-27Glenn Road Plant / 3610043805
PFPeA< 0.003 µg/L0.003 µg/L2023-09-27Agate Plant / 3610043803
PFPeS< 0.004 µg/L0.004 µg/L2023-09-27Agate Plant / 3610043803
PFTA< 0.008 µg/L0.008 µg/L2023-09-27Agate Plant / 3610043803
PFTrDA< 0.007 µg/L0.007 µg/L2023-09-27Glenn Road Plant / 3610043805
PFUnA< 0.002 µg/L0.002 µg/L2023-09-27Bradshaw Plant / 3610043802
lithium19.5 µg/L9 µg/L2023-09-21Arrowhead Plant / 3610043807

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) 0.0016 mg/L2023-01-01 – 2025-12-312026Q3
Lead (PB90) 0 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0.0015 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0.002 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.002 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0.0026 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.005 mg/L2005-01-01 – 2005-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
NITRATE4.6 MG/L2026-07-13AGATE WELL 04 / California DDW laboratory results
NITRATE1.9 MG/L2026-07-13AGATE WELL 05 - STANDBY / California DDW laboratory results
NITRATE2.8 MG/L2026-07-13GLEN ROAD WELL 02 / California DDW laboratory results
NITRATE3.8 MG/L2026-07-13EPDS - COMBINED TREATMENT PLANT EFFLUENT / California DDW laboratory results
NITRATE3.1 MG/L2026-07-13GLEN ROAD WELL 01 / California DDW laboratory results
NITRATE6.0 MG/L2026-07-07BRADSHAW WELL 01 / California DDW laboratory results
NITRATE5.9 MG/L2026-07-07BRADSHAW WELL 02 / California DDW laboratory results
NITRATE4.9 MG/L2026-07-07BRADSHAW WELL 10 / California DDW laboratory results
NITRATE4.7 MG/L2026-07-07BRADSHAW WELL 12 / California DDW laboratory results
NITRATE4.2 MG/L2026-07-07BRADSHAW WELL 11 / California DDW laboratory results
NITRATE4.7 MG/L2026-07-07BTP - COMBINED IX VESSEL EFFLUENT / California DDW laboratory results
NITRATE2.8 MG/L2026-07-07BRADSHAW WELL 06 / 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)

Tinoco, Omar: 310-848-5505

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