OHA Drinking Water Services
OR41
PWS ID: 90661 ---- COVERED BRIDGE MHP
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 WEST WELL GW Permanent 2 samples 1/1/2023 9/29/2025 N/A N/A
EP-B EP FOR EAST WELL GW Permanent 2 samples 1/1/2023 9/29/2025 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 WEST WELL 09/29/2025 0 0 2510030-01,
2510030-01RE2,
2510030-01RE3
Yes EP-B EP FOR EAST WELL 09/29/2025 0 0 2510030-03


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 WEST WELL 09/29/2025 01/14/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026093 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025918 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025848 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026058 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026023 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2819 PFBA Perfluorobutanoic acid ND 4.83 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025953 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2801 PFBS Perfluorobutanesulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026436 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025708 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2802 PFHpA Perfluoroheptanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026401 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025603 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2809 PFHxA Perfluorohexanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026161 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026366 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025743 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025813 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4026296 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2824 PFPeA Perfluoropentanoic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025778 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 1.93 2510030-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037964 4025638 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 1.93 2510030-01RE2 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037965 4025883 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 1.93 2510030-01RE2 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037965 4025673 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.97 2510030-01RE3 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037966 4025988 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2804 PFNA Perfluorononanoic acid ND 10 1.97 2510030-01RE3 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037966 4026331 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WEST WELL 09/29/2025 01/14/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 1.48 2510030-01RE3 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 13746 3037966 4026261 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026094 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025884 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025919 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025849 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026059 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026024 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025989 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025674 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2819 PFBA Perfluorobutanoic acid ND 5.06 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025954 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2801 PFBS Perfluorobutanesulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026437 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025709 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2802 PFHpA Perfluoroheptanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026402 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2829 PFHpS Perfluoroheptanesulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025604 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2809 PFHxA Perfluorohexanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026162 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026367 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025744 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025814 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2804 PFNA Perfluorononanoic acid ND 10 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026332 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026262 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4026297 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2824 PFPeA Perfluoropentanoic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025779 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR EAST WELL 09/29/2025 01/14/2026 2828 PFPeS Perfluoropentanesulfonic acid ND 2.02 2510030-03 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 23274 3037967 4025639 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS



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