OHA Drinking Water Services
OR41
PWS ID: 05737 ---- BERNDT CREEK WATER CORP
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 ROCK CREEK 09/03/2025 0 0 2509059-01
Yes EP-A EP FOR ROCK CREEK 12/15/2025 0 0 170-2632-1

Sample Results
For Compliance? Facility ID
Facility 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 ROCK CREEK 12/15/2025 12/29/2025 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017032 Yes 2813 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017031 Yes 2814 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017030 Yes 2815 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017029 Yes 2816M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2801 PFBS Perfluorobutanesulfonic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017042 Yes 2801M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2807 PFDA Perfluorodecanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017036 Yes 2807 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2808 PFDoA Perfluorododecanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017035 Yes 2808 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2802 PFHpA Perfluoroheptanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017041 Yes 2802 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2809 PFHxA Perfluorohexanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017034 Yes 2809 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017040 Yes 2803M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2804 PFNA Perfluorononanoic acid ND 10 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017039 Yes 2804M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017037 Yes 2806M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017038 Yes 2805M N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 12/15/2025 12/29/2025 2812 PFUnA Perfluoroundecanoic acid ND 2.00 170-2632-1 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS 12282 3032481 4017033 Yes 2812 N 4034 EUROFINS EATON ANALYTICAL EPA 537.1 PFAS SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2813 11Cl-PF3OUdS 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000121 Yes 2813 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2821 4:2FTS 1H,1H, 2H, 2H-Perfluorohexane sulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000073 Yes 2821 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2820 6:2FTS 1H,1H, 2H, 2H-Perfluorooctane sulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000081 Yes 2820 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2822 8:2FTS 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000065 Yes 2822 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2814 9Cl-PF3ONS 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acd ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000113 Yes 2814 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2815 ADONA 4,8-Dioxa-3H-perfluorononanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000105 Yes 2815 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000097 Yes 2816M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2827 NFDHA Nonafluoro-3,6-dioxaheptanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000025 Yes 2827 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2819 PFBA Perfluorobutanoic acid ND 5.03 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000089 Yes 2819 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2801 PFBS Perfluorobutanesulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000201 Yes 2801M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2807 PFDA Perfluorodecanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000153 Yes 2807 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2808 PFDoA Perfluorododecanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000145 Yes 2808 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2826 PFEESA Perfluoro(2-ethoxyethane)sulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000033 Yes 2826 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2802 PFHpA Perfluoroheptanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000193 Yes 2802 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2829 PFHpS Perfluoroheptanesulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000009 Yes 2829 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2809 PFHxA Perfluorohexanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000137 Yes 2809 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2803 PFHxS Perfluorohexanesulfonic acid ND 10 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000185 Yes 2803M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2825 PFMBA Perfluoro-4-methoxybutanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000041 Yes 2825 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2823 PFMPA Perfluoro-3-methoxypropanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000057 Yes 2823 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2804 PFNA Perfluorononanoic acid ND 10 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000177 Yes 2804M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2806 PFOA Perfluorooctanoic acid ND 4.0 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000161 Yes 2806M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000169 Yes 2805M N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2824 PFPeA Perfluoropentanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000049 Yes 2824 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2828 PFPeS Perfluoropentanesulfonic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000017 Yes 2828 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS
Yes EP-A EP FOR ROCK CREEK 09/03/2025 12/05/2025 2812 PFUnA Perfluoroundecanoic acid ND 2.01 2509059-01 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS 12282 3023370 4000129 Yes 2812 N 18 DEQ LABORATORY DIVISION 533 PFAS ISOTOPE DILUTION AEX SPE LC/MS/MS


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