OHA Drinking Water Services
OR41
PWS ID: 93774 ---- WEST UNION ELEM SD 1

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 notes3 Years01/01/2028 - 12/31/2028   5 09/13/2025
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELLTOLUENE  Yearly01/01/2026 - 12/31/2026 250 1 incomplete 06/10/2024
 Seasonal sampling period:  10/01  thru  12/31
EP-A  EP FOR WELL ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,076 1 incomplete06/13/2022
EP-A  EP FOR WELL IOC notes9 Years 01/01/2020 - 12/31/2028 981 1 incomplete08/13/2013
EP-A  EP FOR WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 250 1 incomplete08/26/2025
EP-A  EP FOR WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 981 1 incomplete08/13/2013
EP-A  EP FOR WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 66 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL SOC  3 Years 01/01/2026 - 12/31/2028 981 1 incomplete08/26/2025
EP-A  EP FOR WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 981 1 incomplete06/10/2024

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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
EP-A  EP FOR WELLARSENIC  3 Years01/01/200212/31/20221
EP-A  EP FOR WELLTOLUENE   Quarterly07/01/201303/31/20151

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