OHA Drinking Water Services
OR41
PWS ID: 00971 ---- CAVE JUNCTION, CITY OF
PFAS Sample Results

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Initial Monitoring
EP ID Entry point name Water
type
Availability Frequency Schedule
begin
Schedule
end
First quarter or
First sample
Second quarter or
Second sample
Third
quarter
Fourth
quarter
EP-A EP FOR ILLINOIS RIVER & ROCKY DALE WELLS SW Permanent 4 quarters 1/1/2023
EP-B EP FOR DAISY HILL WELL GW Permanent 2 samples 1/1/2023 11/14/2025 N/A N/A
For each active entry point served by surface water, collect 4 consecutive quarters of samples within a 12-month period with samples collected 2 to 4 months apart.
For each active entry point served by groundwater, collect 2 consecutive samples within a 12-month period with samples collected 5 to 7 months apart.


Sample Summaries
For compliance? EP ID Entry point name Sample date # Detections # MCL
exceedances
Sample ID
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 0 0 2511135-03,
2511135-03RE1


Sample Results
For compliance? EP ID
Entry point name Sample date Received date Analyte
code
Analyte abbreviation
Analyte name
Result (ng/L)
MCL
(ng/L)
MRL
(ng/L)
Sample ID Lab ID Lab name Analysis method Method name TINWSF
ISN
TSASAMPL
ISN
TSASAR
ISN
SelectDataSet SelectAnalyte SelectDetects SelectLabID SelectLabName SelectMethod SelectMethodName
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047179 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047125 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047134 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047116 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047170 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2819 PFBA Perfluorobutanoic acid ND 4.71 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047143 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2801 PFBS Perfluorobutanesulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047269 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047080 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047053 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047251 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047089 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047107 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.41 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047233 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2824 PFPeA Perfluoropentanoic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047098 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 1.88 2511135-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051867 4047062 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047161 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047152 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047071 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2807 PFDA Perfluorodecanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047215 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2808 PFDoA Perfluorododecanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047206 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2802 PFHpA Perfluoroheptanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047260 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2809 PFHxA Perfluorohexanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047197 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2804 PFNA Perfluorononanoic acid ND 10 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047242 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 1.41 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047224 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR DAISY HILL WELL 11/14/2025 02/12/2026 2812 PFUnA Perfluoroundecanoic acid ND 1.88 2511135-03RE1 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15854 3051868 4047188 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS