OHA Drinking Water Services
OR41
PWS ID: 95537 ---- US SILICA

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 Years01/01/2026 - 12/31/2026   5incomplete06/06/2023
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELL2,4-D  Yearly01/01/2026 - 12/31/2026 254 1 incomplete 07/08/2025
EP-A  EP FOR WELL IOC notes9 Years 01/01/2023 - 12/31/2031 2,080 1 incomplete08/30/2021
EP-A  EP FOR WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 254 1 incomplete10/27/2025
EP-A  EP FOR WELL NITRITE notes9 Years01/01/2023 - 12/31/2031 2,080 1 done 07/22/2024
EP-A  EP FOR WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 70 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL SOC  3 Years 01/01/2026 - 12/31/2028 985 1 incomplete07/25/2023
EP-A  EP FOR WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 985 1 incomplete07/25/2023
POU-3  POU FOR AS REMOVAL ARSENIC  Yearly 01/01/2026 - 12/31/2026 254 3 incomplete03/04/2025

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