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Cal-Water Service Co.-Marysville

Published drinking-water records and contacts for Cal-Water Service Co.-Marysville. System CA5810001. Review sources and dates; not a real-time water assessment.

System ID
CA5810001
State or territory
CA
Published population served
12419
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/L2025-03-04Well 15-1 / 5810001801
4:2 FTS< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
6:2 FTS< 0.005 µg/L0.005 µg/L2025-03-04Well 15-1 / 5810001801
8:2 FTS< 0.005 µg/L0.005 µg/L2025-03-04Well 15-1 / 5810001801
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-03-04Well 15-1 / 5810001801
ADONA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
HFPO-DA< 0.005 µg/L0.005 µg/L2025-03-04Well 15-1 / 5810001801
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-03-04Well 15-1 / 5810001801
NFDHA< 0.02 µg/L0.02 µg/L2025-03-04Well 15-1 / 5810001801
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-03-04Well 15-1 / 5810001801
PFBA< 0.005 µg/L0.005 µg/L2025-03-04Well 15-1 / 5810001801
PFBS< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFDA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFDoA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFEESA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFHpA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFHpS< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFHxA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFHxS< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFMBA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFMPA< 0.004 µg/L0.004 µg/L2025-03-04Well 15-1 / 5810001801
PFNA< 0.004 µg/L0.004 µg/L2025-03-04Well 15-1 / 5810001801
PFOA< 0.004 µg/L0.004 µg/L2025-03-04Well 15-1 / 5810001801
PFOS< 0.004 µg/L0.004 µg/L2025-03-04Well 15-1 / 5810001801
PFPeA< 0.003 µg/L0.003 µg/L2025-03-04Well 15-1 / 5810001801
PFPeS< 0.004 µg/L0.004 µg/L2025-03-04Well 15-1 / 5810001801
PFTA< 0.008 µg/L0.008 µg/L2025-03-04Well 15-1 / 5810001801
PFTrDA< 0.007 µg/L0.007 µg/L2025-03-04Well 15-1 / 5810001801
PFUnA< 0.002 µg/L0.002 µg/L2025-03-04Well 15-1 / 5810001801
lithium< 9 µg/L9 µg/L2025-03-04Well 15-1 / 5810001801

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 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2007-12-312026Q3
Lead (PB90) 0 mg/L2002-01-01 – 2004-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
MANGANESE< 10.000000000 UG/L2026-06-24WELL 11 - TREATED / California DDW laboratory results
ARSENIC4.1 UG/L2026-06-24WELL 11 - TREATED / California DDW laboratory results
IRON< 30.000000000 UG/L2026-06-24WELL 14-01 - ACTIVE / California DDW laboratory results
MANGANESE280 UG/L2026-06-24WELL 11-01 / California DDW laboratory results
IRON220 UG/L2026-06-24WELL 11-01 / California DDW laboratory results
MANGANESE19 UG/L2026-06-24WELL 14-01 - ACTIVE / California DDW laboratory results
ARSENIC4.5 UG/L2026-06-24WELL 14 - TREATED- ACTIVE DEAD / California DDW laboratory results
IRON< 30.000000000 UG/L2026-06-24WELL 14 - TREATED- ACTIVE DEAD / California DDW laboratory results
IRON< 30.000000000 UG/L2026-06-24WELL 11 - TREATED / California DDW laboratory results
MANGANESE< 10.000000000 UG/L2026-06-24WELL 14 - TREATED- ACTIVE DEAD / California DDW laboratory results
PERFLUOROUNDECANOIC ACID (PFUNA)< 2.000000000 NG/L2026-06-22WELL 15-01-GAC-EFFLUENT / California DDW laboratory results
IRON< 30.000000000 UG/L2026-06-22WELL 10 - CHLORINATED - ACTIVE DEAD / 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)

James, Sophie: 408-367-8593

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