OHA Drinking Water Services
OR41
PWS ID: 00673 ---- PRAIRIE CITY
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 INFILTRATION GALLERIES & WELLS GU Permanent 4 quarters 1/1/2023 4/1/2026
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 INFILTRATION GALLERIES & WELLS 04/01/2026 0 0 M6D0298-01IN


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 INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2816 HFPO-DA Hexafluoropropylene oxide dimer acid ND 10 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093350 Yes 2816M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2
Yes EP-A EP FOR INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2801 PFBS Perfluorobutanesulfonic acid ND 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093355 Yes 2801M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2
Yes EP-A EP FOR INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2803 PFHxS Perfluorohexanesulfonic acid ND 10 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093354 Yes 2803M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2
Yes EP-A EP FOR INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2804 PFNA Perfluorononanoic acid ND 10 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093353 Yes 2804M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2
Yes EP-A EP FOR INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2806 PFOA Perfluorooctanoic acid ND 4.0 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093351 Yes 2806M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2
Yes EP-A EP FOR INFILTRATION GALLERIES & WELLS 04/01/2026 04/10/2026 2805 PFOS Perfluorooctanesulfonic acid ND 4.0 1.84 M6D0298-01IN 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2 15353 3081117 4093352 Yes 2805M N 4211 MICROBAC LABORATORIES - MARIETTA EPA 537.1.V2 EPA 537.1.V2