An independent public resourceEnglish Español
PublicWater Watch

Plumas Lake

Published drinking-water records and contacts for Plumas Lake. System CA5805001. Review sources and dates; not a real-time water assessment.

System ID
CA5805001
State or territory
CA
Published population served
10464
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/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
4:2 FTS< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
6:2 FTS< 0.005 µg/L0.005 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
8:2 FTS< 0.005 µg/L0.005 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
ADONA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
HFPO-DA< 0.005 µg/L0.005 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
NFDHA< 0.02 µg/L0.02 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFBA< 0.005 µg/L0.005 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFBS< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFDA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFDoA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFEESA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFHpA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFHpS< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFHxA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFHxS< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFMBA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFMPA< 0.004 µg/L0.004 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFNA< 0.004 µg/L0.004 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFOA< 0.004 µg/L0.004 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFOS< 0.004 µg/L0.004 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFPeA< 0.003 µg/L0.003 µg/L2025-10-13Plumas Lake Treatment Plant Wells 31/32 / EP3132
PFPeS< 0.004 µg/L0.004 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFTA< 0.008 µg/L0.008 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFTrDA< 0.007 µg/L0.007 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
PFUnA< 0.002 µg/L0.002 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34
lithium< 9 µg/L9 µg/L2025-10-13Plumas Lake Treatment Plant Well 34 / EP34

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/L2022-01-01 – 2024-12-312026Q3
Lead (PB90) 0 mg/L2019-01-01 – 2021-12-312026Q3
Lead (PB90) 0 mg/L2016-01-01 – 2018-12-312026Q3
Lead (PB90) 0 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0 mg/L2009-01-01 – 2009-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2008-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2007-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
PERFLUORODECANE SULFONIC ACID 8:2 FTS< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
9CL-PF3ONS< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
PERFLUORONONANOIC ACID (PFNA)< 2.000000000 NG/L2026-06-17WELL 34 / California DDW laboratory results
PERFLUOROHEPTANOIC ACID (PFHPA)< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
HFPO-DA< 2.000000000 NG/L2026-06-17WELL 34 / California DDW laboratory results
PERFLUOROCTANOIC ACID (PFOA)< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
PERFLUORO PFEESA< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
PERFLUORO PFMPA< 2.000000000 NG/L2026-06-17WELL 34 / California DDW laboratory results
PERFLUOROBUTANOIC ACID (PFBA)< 2.000000000 NG/L2026-06-17WELL 34 / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID (PFHxS)< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID 4:2 FTS< 2.000000000 NG/L2026-06-17WELL 32 / California DDW laboratory results
PERFLUORO PFMBA< 2.000000000 NG/L2026-06-17WELL 32 / 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)

Tillotson, John: 530-743-8573

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