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Town of Friday Harbor

Published drinking-water records and contacts for Town of Friday Harbor. System WA5326595. Review sources and dates; not a real-time water assessment.

System ID
WA5326595
State or territory
WA
Published population served
3543
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/L2023-10-17Treatment Plant / EP1
4:2 FTS< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
6:2 FTS< 0.005 µg/L0.005 µg/L2023-10-17Treatment Plant / EP1
8:2 FTS< 0.005 µg/L0.005 µg/L2023-10-17Treatment Plant / EP1
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2023-10-17Treatment Plant / EP1
ADONA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
HFPO-DA< 0.005 µg/L0.005 µg/L2023-10-17Treatment Plant / EP1
NEtFOSAA< 0.005 µg/L0.005 µg/L2023-10-17Treatment Plant / EP1
NFDHA< 0.02 µg/L0.02 µg/L2023-10-17Treatment Plant / EP1
NMeFOSAA< 0.006 µg/L0.006 µg/L2023-10-17Treatment Plant / EP1
PFBA< 0.005 µg/L0.005 µg/L2023-10-17Treatment Plant / EP1
PFBS< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFDA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFDoA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFEESA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFHpA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFHpS< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFHxA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFHxS< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFMBA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFMPA< 0.004 µg/L0.004 µg/L2023-10-17Treatment Plant / EP1
PFNA< 0.004 µg/L0.004 µg/L2023-10-17Treatment Plant / EP1
PFOA< 0.004 µg/L0.004 µg/L2023-10-17Treatment Plant / EP1
PFOS< 0.004 µg/L0.004 µg/L2023-10-17Treatment Plant / EP1
PFPeA< 0.003 µg/L0.003 µg/L2023-10-17Treatment Plant / EP1
PFPeS< 0.004 µg/L0.004 µg/L2023-10-17Treatment Plant / EP1
PFTA< 0.008 µg/L0.008 µg/L2023-10-17Treatment Plant / EP1
PFTrDA< 0.007 µg/L0.007 µg/L2023-10-17Treatment Plant / EP1
PFUnA< 0.002 µg/L0.002 µg/L2023-10-17Treatment Plant / EP1
lithium< 9 µg/L9 µg/L2023-10-17Treatment Plant / EP1

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) 0.0016 mg/L2023-01-01 – 2025-12-312026Q3
Lead (PB90) 0.005 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0.002 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0.002 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.002 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0.003 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0.003 mg/L2005-01-01 – 2007-12-312026Q3
Lead (PB90) 0.003 mg/L2002-01-01 – 2004-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
8:2FTSBelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFMPABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFBSBelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFEESABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFNABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFHxABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
NFDHABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFMBABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
ADONABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFHpSBelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFPeABelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test results
PFPeSBelow a limit; numeric threshold unavailable ng/L2026-05-0701 / Washington DOH PFAS test 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

47 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
Surface Water Treatment Rule / Monitoring of Treatment (SWTR-Filter)2023-01-01 – 2023-01-31ResolvedNo2026Q3
Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report2018-07-01 – —ResolvedNo2026Q3
Nitrate Rule / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-07-01 – 1997-07-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-06-01 – 1997-06-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-05-01 – 1997-05-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-04-01 – 1997-04-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-03-01 – 1997-03-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-02-01 – 1997-02-28ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1997-01-01 – 1997-01-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-12-01 – 1996-12-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-11-01 – 1996-11-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-10-01 – 1996-10-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-09-01 – 1996-09-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-08-01 – 1996-08-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-07-01 – 1996-07-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-06-01 – 1996-06-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-05-01 – 1996-05-31ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-04-01 – 1996-04-30ArchivedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)1996-03-01 – 1996-03-31ArchivedYes2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

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