OHA Drinking Water Services
OR41
PWS ID: 05714 ---- NORTHWEST HAZELNUT COMPANY

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 Months01/01/2026 - 06/30/2026 71 5 done 01/27/2026
EP-A  EP FOR WELL ARSENIC  3 Years 01/01/2026 - 12/31/2028 986 1 incomplete10/14/2024
EP-A  EP FOR WELL IOC  3 Years 01/01/2026 - 12/31/2028 986 1 incomplete10/14/2024
EP-A  EP FOR WELL NITRATE  Quarterly 04/01/2026 - 06/30/2026 71 1 incomplete01/27/2026
EP-A  EP FOR WELL NITRITE  3 Years 01/01/2026 - 12/31/2028 986 1 incomplete10/14/2024
EP-A  EP FOR WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 71 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELL SOC  Yearly 01/01/2026 - 12/31/2026 255 1 incomplete10/20/2025
EP-A  EP FOR WELL VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 255 1 incomplete10/20/2025

7  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
EP-A  EP FOR WELLNITRATE  Quarterly01/01/200912/31/20111
EP-A  EP FOR WELLNITRATE  Yearly01/01/200212/31/20081
EP-A  EP FOR WELLNITRATE  Yearly01/01/201203/31/20141

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