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San Lorenzo Valley Water Dist

Published drinking-water records and contacts for San Lorenzo Valley Water Dist. System CA4410014. Review sources and dates; not a real-time water assessment.

System ID
CA4410014
State or territory
CA
Published population served
21145
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/L2025-02-04Pasatiempo Well 8 / 4410014041
4:2 FTS< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
6:2 FTS< 0.005 µg/L0.005 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
8:2 FTS< 0.005 µg/L0.005 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
ADONA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
HFPO-DA< 0.005 µg/L0.005 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
NFDHA< 0.02 µg/L0.02 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFBA< 0.005 µg/L0.005 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFBS< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFDA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFDoA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFEESA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFHpA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFHpS< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFHxA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFHxS< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFMBA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFMPA< 0.004 µg/L0.004 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFNA< 0.004 µg/L0.004 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFOA< 0.004 µg/L0.004 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFOS< 0.004 µg/L0.004 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFPeA< 0.003 µg/L0.003 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFPeS< 0.004 µg/L0.004 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFTA< 0.008 µg/L0.008 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFTrDA< 0.007 µg/L0.007 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
PFUnA< 0.002 µg/L0.002 µg/L2025-02-04Pasatiempo Well 8 / 4410014041
lithium< 9 µg/L9 µg/L2025-02-04Pasatiempo Well 8 / 4410014041

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) 0.0027 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0 mg/L2018-01-01 – 2020-12-312026Q3
Lead (PB90) 0 mg/L2015-01-01 – 2017-12-312026Q3
Lead (PB90) 0.0048 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0.0021 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0.0023 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.003 mg/L2003-01-01 – 2005-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
LEAD< 0.500000000 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
COPPER, FREE380 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
COPPER, FREE530 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
COPPER, FREE520 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
LEAD0.63 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
LEAD< 0.500000000 UG/L2026-07-08LCR Tap Sample / California DDW laboratory results
COPPER, FREE470 UG/L2026-07-07LCR Tap Sample / California DDW laboratory results
MANGANESE3.5 UG/L2026-07-07PASATIEMPO WELLS ARSENIC BLEND / California DDW laboratory results
LEAD0.53 UG/L2026-07-07LCR Tap Sample / California DDW laboratory results
LEAD0.50 UG/L2026-07-07LCR Tap Sample / California DDW laboratory results
COPPER, FREE370 UG/L2026-07-07LCR Tap Sample / California DDW laboratory results
ARSENIC1.9 UG/L2026-07-07PASATIEMPO WELLS ARSENIC BLEND / 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

2 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 Revisions / LSL Inventory2024-10-17 – —UnaddressedYes2026Q3
Lead and Copper Rule Revisions / LSL Reporting2024-10-17 – —UnaddressedNo2026Q3

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)

Lillion, Jason: 831-430-4624

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