OHA Drinking Water Services
OR41
PWS ID: 06054 ---- BIG OAK MARINA

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 96 10 incomplete10/25/2024
EP-A  EP for WELL ARSENIC  3 Years 01/01/2026 - 12/31/2028 1,011 1 incomplete09/20/2022
EP-A  EP for WELL IOC  3 Years 01/01/2026 - 12/31/2028 1,011 1 incomplete
EP-A  EP for WELL NITRATE  Yearly 01/01/2026 - 12/31/2026 280 1 incomplete11/14/2025
EP-A  EP for WELL NITRITE  3 Years 01/01/2026 - 12/31/2028 1,011 1 incomplete
EP-A  EP for WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 96 1 incomplete08/28/2025
  Initial monitoring - 2 samples only
EP-A  EP for WELL RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,202 1 incomplete02/09/2024
EP-A  EP for WELL RAD - RADIUM 226/228 9 Years 01/01/2026 - 12/31/2034 3,202 1 incomplete02/09/2024
EP-A  EP for WELL RAD - URANIUM  9 Years 01/01/2026 - 12/31/2034 3,202 1 incomplete02/09/2024
EP-A  EP for WELL SOC  Yearly 01/01/2026 - 12/31/2026 280 1 incomplete02/24/2025
EP-A  EP for WELL VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 280 1 incomplete02/24/2025

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