OHA Drinking Water Services
OR41
PWS ID: 00301 ---- HECETA WATER PEOPLES UTILITY DISTRICT
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 CLEAR LAKE SW Permanent 4 quarters 1/1/2023 12/31/2024 2/21/2024 5/21/2024 8/20/2024 11/20/2024
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 CLEAR LAKE 02/21/2024 0 0 113346P
Yes EP-A EP for CLEAR LAKE 05/21/2024 0 0 116520P
Yes EP-A EP for CLEAR LAKE 08/20/2024 0 0 120011P
Yes EP-A EP for CLEAR LAKE 11/20/2024 0 0 122902P


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 CLEAR LAKE 02/21/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000303 Yes 2816M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 02/21/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000791 Yes 2801M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 02/21/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000694 Yes 2803M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 02/21/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000594 Yes 2804M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 02/21/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000400 Yes 2806M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 02/21/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 113346P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021227 4000497 Yes 2805M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000306 Yes 2816M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000790 Yes 2801M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000693 Yes 2803M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000597 Yes 2804M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000403 Yes 2806M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 05/21/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 116520P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021230 4000500 Yes 2805M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000305 Yes 2816M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000789 Yes 2801M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000692 Yes 2803M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000596 Yes 2804M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000402 Yes 2806M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 08/20/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 120011P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021229 4000499 Yes 2805M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.70 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000304 Yes 2816M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2801 PFBS Perfluorobutanesulfonic acid ND 1.00 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000788 Yes 2801M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.00 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000691 Yes 2803M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2804 PFNA Perfluorononanoic acid ND 10 1.30 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000595 Yes 2804M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 1.30 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000401 Yes 2806M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP for CLEAR LAKE 11/20/2024 09/04/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.30 122902P 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 15441 3021228 4000498 Yes 2805M N 4035 BABCOCK LABORTORIES, INC. EPA 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS