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Patterson Tract Csd

Published drinking-water records and contacts for Patterson Tract Csd. System CA5402038. Review sources and dates; not a real-time water assessment.

System ID
CA5402038
State or territory
CA
Published population served
550
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/L2024-12-03Well Treatment / 003
4:2 FTS< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
6:2 FTS< 0.005 µg/L0.005 µg/L2024-12-03Well Treatment / 003
8:2 FTS< 0.005 µg/L0.005 µg/L2024-12-03Well Treatment / 003
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-12-03Well Treatment / 003
ADONA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
HFPO-DA< 0.005 µg/L0.005 µg/L2024-12-03Well Treatment / 003
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-12-03Well Treatment / 003
NFDHA< 0.02 µg/L0.02 µg/L2024-12-03Well Treatment / 003
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-12-03Well Treatment / 003
PFBA< 0.005 µg/L0.005 µg/L2024-12-03Well Treatment / 003
PFBS< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFDA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFDoA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFEESA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFHpA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFHpS< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFHxA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFHxS< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFMBA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFMPA< 0.004 µg/L0.004 µg/L2024-12-03Well Treatment / 003
PFNA< 0.004 µg/L0.004 µg/L2024-12-03Well Treatment / 003
PFOA< 0.004 µg/L0.004 µg/L2024-12-03Well Treatment / 003
PFOS< 0.004 µg/L0.004 µg/L2024-12-03Well Treatment / 003
PFPeA< 0.003 µg/L0.003 µg/L2024-12-03Well Treatment / 003
PFPeS< 0.004 µg/L0.004 µg/L2024-12-03Well Treatment / 003
PFTA< 0.008 µg/L0.008 µg/L2024-12-03Well Treatment / 003
PFTrDA< 0.007 µg/L0.007 µg/L2024-12-03Well Treatment / 003
PFUnA< 0.002 µg/L0.002 µg/L2024-12-03Well Treatment / 003
lithium< 9 µg/L9 µg/L2024-12-03Well Treatment / 003

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/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0.0006 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) 0.0004 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0.0006 mg/L2004-01-01 – 2006-12-312026Q3
Lead (PB90) 0.00045 mg/L2001-01-01 – 2003-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
NITRATE5 MG/L2026-05-27WELL 02 EAST - RAW / California DDW laboratory results
NITRATE5.4 MG/L2026-02-10WELL 02 EAST - RAW / California DDW laboratory results
CHROMIUM< 1.000000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
TERT-BUTYLBENZENE< 0.500000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
1,2,3-TRICHLOROBENZENE< 0.500000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
LANGELIER INDEX (PH(S))-1.5 LANG2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
1,1,2,2-TETRACHLOROETHANE< 0.500000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
ALUMINUM< 20.000000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
CHLOROETHANE< 1.000000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
MERCURY< 0.010000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
P-CHLOROTOLUENE< 0.500000000 UG/L2026-01-14WELL 01 WEST - RAW / California DDW laboratory results
ARSENIC2 UG/L2026-01-14WELL 01 WEST - RAW / 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

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

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R2023-10-01 – —ResolvedNo2026Q3

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)

Lee, Linda: 559-734-2965

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