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Folsom, City of - Main

Published drinking-water records and contacts for Folsom, City of - Main. System CA3410014. Review sources and dates; not a real-time water assessment.

System ID
CA3410014
State or territory
CA
Published population served
80969
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/L2025-05-06Folsom WTP / 3410014801
4:2 FTS< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
6:2 FTS< 0.005 µg/L0.005 µg/L2025-05-06Folsom WTP / 3410014801
8:2 FTS< 0.005 µg/L0.005 µg/L2025-05-06Folsom WTP / 3410014801
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-05-06Folsom WTP / 3410014801
ADONA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
HFPO-DA< 0.005 µg/L0.005 µg/L2025-05-06Folsom WTP / 3410014801
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-05-06Folsom WTP / 3410014801
NFDHA< 0.02 µg/L0.02 µg/L2025-05-06Folsom WTP / 3410014801
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-05-06Folsom WTP / 3410014801
PFBA< 0.005 µg/L0.005 µg/L2025-05-06Folsom WTP / 3410014801
PFBS< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFDA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFDoA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFEESA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFHpA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFHpS< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFHxA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFHxS< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFMBA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFMPA< 0.004 µg/L0.004 µg/L2025-05-06Folsom WTP / 3410014801
PFNA< 0.004 µg/L0.004 µg/L2025-05-06Folsom WTP / 3410014801
PFOA< 0.004 µg/L0.004 µg/L2025-05-06Folsom WTP / 3410014801
PFOS< 0.004 µg/L0.004 µg/L2025-05-06Folsom WTP / 3410014801
PFPeA< 0.003 µg/L0.003 µg/L2025-05-06Folsom WTP / 3410014801
PFPeS< 0.004 µg/L0.004 µg/L2025-05-06Folsom WTP / 3410014801
PFTA< 0.008 µg/L0.008 µg/L2025-05-06Folsom WTP / 3410014801
PFTrDA< 0.007 µg/L0.007 µg/L2025-05-06Folsom WTP / 3410014801
PFUnA< 0.002 µg/L0.002 µg/L2025-05-06Folsom WTP / 3410014801
lithium< 9 µg/L9 µg/L2025-05-06Folsom WTP / 3410014801

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 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) 0.0025 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.0025 mg/L2005-01-01 – 2005-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
MONOCHLOROACETIC ACID< 2.000000000 UG/L2026-07-08DBPR Sample / California DDW laboratory results
BROMODICHLOROMETHANE2.1 UG/L2026-07-08DBPR Sample / California DDW laboratory results
COPPER, FREE< 5.000000000 UG/L2026-07-08FOLSOM LAKE - TREATED / California DDW laboratory results
DICHLOROACETIC ACID6.0 UG/L2026-07-08DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE< 0.500000000 UG/L2026-07-08DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE< 0.500000000 UG/L2026-07-08DBPR Sample / California DDW laboratory results
TURBIDITY1.4 NTU2026-07-08FOLSOM LAKE - TREATED / California DDW laboratory results
DICHLOROACETIC ACID15 UG/L2026-07-08DBPR Sample / California DDW laboratory results
HYDROXIDE AS CALCIUM CARBONATE< 3.000000000 MG/L2026-07-08FOLSOM LAKE - TREATED / California DDW laboratory results
MANGANESE< 10.000000000 UG/L2026-07-08FOLSOM LAKE - TREATED / California DDW laboratory results
NITRITE< 0.050000000 MG/L2026-07-08FOLSOM LAKE - TREATED / California DDW laboratory results
SILVER< 10.000000000 UG/L2026-07-08FOLSOM LAKE - TREATED / 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)

Yasutake, Marcus: 916-461-6161

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