OHA Drinking Water Services
OR41
PWS ID: 00726 ---- WARREN WATER ASSOCIATION
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 WARREN WELL GW Permanent 2 samples 1/1/2023 4/17/2025 N/A N/A
EP-B EP FOR GORIN WELL GW Permanent 2 samples 1/1/2023 4/17/2025 N/A N/A
EP-C EP FOR PANORAMA WELL GW Permanent 2 samples 1/1/2023 4/17/2025 N/A N/A
EP-D EP FOR ELLISON WELL GW Permanent 2 samples 1/1/2023 4/17/2025 N/A N/A
EP-E EP FOR BLAHA WELL (L57271) GW Permanent 2 samples 1/1/2023 4/17/2025 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 WARREN WELL 04/17/2025 0 0 K2504003-001-P
Yes EP-B EP FOR GORIN WELL 04/17/2025 0 0 K2504003-007-P
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 0 0 K2504003-005-P
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 0 0 K2504003-009-P
Yes EP-D EP FOR ELLISON WELL 04/17/2025 0 0 K2504003-003-P


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 WARREN WELL 04/17/2025 04/28/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915788 Yes 2816M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WARREN WELL 04/17/2025 04/28/2025 2801 PFBS Perfluorobutanesulfonic acid ND 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915838 Yes 2801M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WARREN WELL 04/17/2025 04/28/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915828 Yes 2803M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WARREN WELL 04/17/2025 04/28/2025 2804 PFNA Perfluorononanoic acid ND 10 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915818 Yes 2804M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WARREN WELL 04/17/2025 04/28/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915798 Yes 2806M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR WARREN WELL 04/17/2025 04/28/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 0.860 K2504003-001-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12753 2970192 3915808 Yes 2805M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915791 Yes 2816M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2801 PFBS Perfluorobutanesulfonic acid ND 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915841 Yes 2801M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915831 Yes 2803M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2804 PFNA Perfluorononanoic acid ND 10 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915821 Yes 2804M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915801 Yes 2806M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-B EP FOR GORIN WELL 04/17/2025 04/28/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 0.860 K2504003-007-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12754 2970195 3915811 Yes 2805M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915792 Yes 2816M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2801 PFBS Perfluorobutanesulfonic acid ND 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915842 Yes 2801M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915832 Yes 2803M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2804 PFNA Perfluorononanoic acid ND 10 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915822 Yes 2804M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915802 Yes 2806M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-C EP FOR PANORAMA WELL 04/17/2025 04/28/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 0.880 K2504003-009-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17028 2970196 3915812 Yes 2805M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915789 Yes 2816M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2801 PFBS Perfluorobutanesulfonic acid ND 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915839 Yes 2801M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915829 Yes 2803M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2804 PFNA Perfluorononanoic acid ND 10 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915819 Yes 2804M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915799 Yes 2806M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-D EP FOR ELLISON WELL 04/17/2025 04/28/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 0.860 K2504003-003-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 17492 2970193 3915809 Yes 2805M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915790 Yes 2816M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2801 PFBS Perfluorobutanesulfonic acid ND 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915840 Yes 2801M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915830 Yes 2803M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2804 PFNA Perfluorononanoic acid ND 10 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915820 Yes 2804M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915800 Yes 2806M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-E EP FOR BLAHA WELL (L57271) 04/17/2025 04/28/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 0.850 K2504003-005-P WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 21041 2970194 3915810 Yes 2805M N WA100010 ALS ENVIRONMENTAL - KELSO 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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