OHA Drinking Water Services
OR41
PWS ID: 00899 ---- TOLEDO WATER UTILITIES
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 MILL CREEK AND SILETZ RIVER SW Permanent 4 quarters 1/1/2023 12/31/2023 1/10/2023 4/10/2023 7/18/2023 10/4/2023
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.


Sample Summaries
For compliance? EP ID Entry point name Sample date # Detections # MCL
exceedances		 Sample ID
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 0 0 100532P
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 0 0 103258P
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 0 0 106055P
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 0 0 109035P


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 MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4000867 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4001356 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4001258 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4001160 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4000964 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 01/10/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 100532P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021142 4001062 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4000868 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4001357 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4001259 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4001161 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4000965 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 04/10/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 103258P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021143 4001063 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4000870 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4001359 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4001261 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4001163 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4000967 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 07/18/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 106055P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021145 4001065 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4000869 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4001358 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4001260 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4001162 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4000966 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR MILL CREEK AND SILETZ RIVER 10/04/2023 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 109035P 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12274 3021144 4001064 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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