OHA Drinking Water Services
OR41
PWS ID: 94203 ---- USACE JOHN DAY DAM

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 08/25/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notes3 Years01/01/2028 - 12/31/2028   1 08/25/2025
  Seasonal sampling period:   08/01   thru   08/31
EP-A  EP FOR WELL #3 ARSENIC  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete08/27/2024
EP-A  EP FOR WELL #3 IOC  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete08/27/2024
EP-A  EP FOR WELL #3 NITRATE  Yearly 01/01/2026 - 12/31/2026 239 1 incomplete07/09/2025
EP-A  EP FOR WELL #3 NITRITE  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete08/27/2024
EP-A  EP FOR WELL #3 PFAS notes6 Months 01/01/2026 - 06/30/2026 55 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL #3 SOC  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete08/27/2024
EP-A  EP FOR WELL #3 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 970 1 incomplete08/27/2024

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