OHA Drinking Water Services
OR41
PWS ID: 94431 ---- JLR

See also: Coliform Schedules

Chemical Sampling Schedule Status
Facility
ID
Analyte or Group   Sampling
Interval
Monitoring Period Days
Until
End
Samples
Required
Samples
Received
Last
Sample
Date
Start End
DIST-A  Distribution System LEAD & COPPER  6 Months 01/01/2026 - 06/30/2026 60 10 incomplete10/07/2025
EP-A  EP FOR WELLS #2,4,5 & 7 ARSENIC notesQuarterly04/01/2026 - 06/30/2026 60 1 done 04/20/2026
EP-A  EP FOR WELLS #2,4,5 & 7 IOC notes9 Years 01/01/2020 - 12/31/2028 975 1 incomplete12/15/2015
EP-A  EP FOR WELLS #2,4,5 & 7 NITRATE  Yearly01/01/2026 - 12/31/2026 244 1 done 01/20/2026
EP-A  EP FOR WELLS #2,4,5 & 7 NITRITE notes9 Years 01/01/2020 - 12/31/2028 975 1 incomplete03/09/2017
EP-A  EP FOR WELLS #2,4,5 & 7 PFAS notes6 Months 01/01/2026 - 06/30/2026 60 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELLS #2,4,5 & 7 SOC  3 Years 01/01/2026 - 12/31/2028 975 1 incomplete02/18/2025
EP-A  EP FOR WELLS #2,4,5 & 7 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 975 1 incomplete02/18/2025

4  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200412/31/20101Sample between June 1 and Sept. 30.
DIST-A  Distribution SystemLEAD & COPPER  3 Years01/01/200212/31/20225Sample Between June 1st and Sept 30th
DIST-A  Distribution SystemLEAD & COPPER  6 Months01/01/202306/30/202310
EP-A  EP FOR WELLS #2,4,5 & 7ARSENIC  3 Years01/01/200203/31/20111
EP-A  EP FOR WELLS #2,4,5 & 7ARSENIC  Quarterly04/01/201103/31/20121
EP-A  EP FOR WELLS #2,4,5 & 7ARSENIC  Yearly01/01/201312/31/20141
EP-A  EP FOR WELLS #2,4,5 & 7CIS-1,2-DICHLOROETHYLENE   Quarterly10/01/201006/30/20111
EP-A  EP FOR WELLS #2,4,5 & 7CIS-1,2-DICHLOROETHYLENE   Yearly01/01/201212/31/20191R&C below MCL; sample during the 1st quarter each year.
EP-A  EP FOR WELLS #2,4,5 & 7TRANS-1,2-DICHLOROETHYLENE   Quarterly10/01/201006/30/20111
EP-A  EP FOR WELLS #2,4,5 & 7TRANS-1,2-DICHLOROETHYLENE   Yearly01/01/201212/31/20191R&C below MCL; sample during the 1st quarter each year.
EP-A  EP FOR WELLS #2,4,5 & 7VINYL CHLORIDE   Quarterly10/01/201006/30/20111
EP-A  EP FOR WELLS #2,4,5 & 7VINYL CHLORIDE   Yearly01/01/201212/31/20191R&C below MCL; sample during the 1st quarter each year.
EP-A  EP FOR WELLS #2,4,5 & 7VOLATILE ORGANICS  3 Years01/01/200212/31/20191

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