OHA Drinking Water Services
OR41
PWS ID: 95591 ---- AMAZON DATA UMATILLA PDX063

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  Yearly 01/01/2026 - 12/31/2026 245 5 incomplete01/08/2025
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP FOR WELL #1 ARSENIC  9 Years01/01/2032 -   1 future 08/09/2023
EP-A  EP FOR WELL #1 IOC  9 Years01/01/2032 -   1 future 08/09/2023
EP-A  EP FOR WELL #1 NITRATE  Yearly 01/01/2026 - 12/31/2026 245 1 incomplete08/13/2025
EP-A  EP FOR WELL #1 NITRITE  9 Years01/01/2032 -   1 future 08/09/2023
EP-A  EP FOR WELL #1 PFAS notes6 Months 01/01/2026 - 06/30/2026 61 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL #1 SOC  3 Years 01/01/2026 - 12/31/2028 976 1 incomplete08/09/2023
EP-A  EP FOR WELL #1 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 976 1 incomplete08/09/2023

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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/202406/30/20255
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months07/01/201906/30/20205
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  Yearly01/01/202112/31/20235Sample between June 1 and September 30
EP-A  EP FOR WELL #1ARSENIC  3 Years01/01/202012/31/20231
EP-A  EP FOR WELL #1IOC  3 Years01/01/202012/31/20231
EP-A  EP FOR WELL #1NITRITE  3 Years01/01/202012/31/20231
EP-A  EP FOR WELL #1SOC  Yearly01/01/201912/31/20191
EP-A  EP FOR WELL #1VOLATILE ORGANICS  Yearly01/01/201912/31/20191

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