OHA Drinking Water Services
OR41
PWS ID: 00504 ---- MALIN MUNICIPAL WATER
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 WELLS #2 AND #5 GW Permanent 2 samples 1/1/2023 9/24/2025 N/A N/A
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-A EP FOR WELLS #2 AND #5 09/24/2025 2 0 2509329-01,
2509329-01RE2,
2509329-01RE3


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-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026071 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025896 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025826 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026036 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026001 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2819 PFBA Perfluorobutanoic acid ND 4.99 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025931 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2801 PFBS Perfluorobutanesulfonic acid 2.29 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026414 Yes 2801M D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2808 PFDoA Perfluorododecanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026174 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025686 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2802 PFHpA Perfluoroheptanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026379 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025581 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2809 PFHxA Perfluorohexanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026139 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2803 PFHxS Perfluorohexanesulfonic acid 2.41 10 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026344 Yes 2803M D 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025721 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025791 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026239 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026274 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2824 PFPeA Perfluoropentanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025756 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4025616 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2812 PFUnA Perfluoroundecanoic acid ND 2.00 2509329-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037936 4026106 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 2.00 2509329-01RE2 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037937 4025861 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 2.00 2509329-01RE2 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037937 4025966 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 2.00 2509329-01RE2 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037937 4025651 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WELLS #2 AND #5 09/24/2025 01/14/2026 2804 PFNA Perfluorononanoic acid ND 10 2.03 2509329-01RE3 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12653 3037938 4026309 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS