OHA Drinking Water Services
OR41
PWS ID: 00932 ---- WARRENTON, CITY OF
PFAS Sample Results

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Sample Summaries
For Compliance? Facility ID Facility Name Sample Date # Detections # MCL
Exceedances		 Sample ID
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 0 0 105231P
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 0 0 108058P
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 0 0 110959P
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 0 0 102416P

Sample Results
For Compliance? Facility ID
Facility Name Sample Date Received Date Analyte Abbreviation
 Analyte Name
Result (ng/L)
MRL (ng/L) Sample ID SelectAnalyte SelectDetects SelectDataSet
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 HFPO-DA Hexafluoropropylene oxide dimer acid ND 1.70 105231P 2816M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 PFBS Perfluorobutanesulfonic acid ND 1.00 105231P 2801M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 PFHxS Perfluorohexanesulfonic acid ND 1.00 105231P 2803M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 PFNA Perfluorononanoic acid ND 1.30 105231P 2804M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 PFOA Perfluorooctanoic acid ND 1.30 105231P 2806M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 06/20/2023 09/04/2025 PFOS Perfluorooctanesulfonic acid ND 1.30 105231P 2805M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 HFPO-DA Hexafluoropropylene oxide dimer acid ND 1.70 102416P 2816M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 PFBS Perfluorobutanesulfonic acid ND 1.00 102416P 2801M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 PFHxS Perfluorohexanesulfonic acid ND 1.00 102416P 2803M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 PFNA Perfluorononanoic acid ND 1.30 102416P 2804M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 PFOA Perfluorooctanoic acid ND 1.30 102416P 2806M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 03/21/2023 09/04/2025 PFOS Perfluorooctanesulfonic acid ND 1.30 102416P 2805M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 HFPO-DA Hexafluoropropylene oxide dimer acid ND 1.70 110959P 2816M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 PFBS Perfluorobutanesulfonic acid ND 1.00 110959P 2801M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 PFHxS Perfluorohexanesulfonic acid ND 1.00 110959P 2803M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 PFNA Perfluorononanoic acid ND 1.30 110959P 2804M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 PFOA Perfluorooctanoic acid ND 1.30 110959P 2806M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 12/12/2023 09/04/2025 PFOS Perfluorooctanesulfonic acid ND 1.30 110959P 2805M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 HFPO-DA Hexafluoropropylene oxide dimer acid ND 1.70 108058P 2816M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 PFBS Perfluorobutanesulfonic acid ND 1.00 108058P 2801M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 PFHxS Perfluorohexanesulfonic acid ND 1.00 108058P 2803M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 PFNA Perfluorononanoic acid ND 1.30 108058P 2804M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 PFOA Perfluorooctanoic acid ND 1.30 108058P 2806M N Yes
Yes EP-A EP FOR WTP (LEWIS & CLARK RIVER/CREEK) 09/19/2023 09/04/2025 PFOS Perfluorooctanesulfonic acid ND 1.30 108058P 2805M N Yes


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