OHA Drinking Water Services
OR41
PWS ID: 93718 ---- NINETY-ONE ELEM SD 91

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 73 10 incomplete09/24/2025
EP-A  EP FOR WELLS ARSENIC  Quarterly 04/01/2026 - 06/30/2026 73 1 incomplete08/05/2025
EP-A  EP FOR WELLS IOC notes9 Years 01/01/2020 - 12/31/2028 988 1 incomplete06/26/2014
EP-A  EP FOR WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 257 1 incomplete12/16/2025
EP-A  EP FOR WELLS NITRITE notes9 Years 01/01/2020 - 12/31/2028 988 1 incomplete06/26/2014
EP-A  EP FOR WELLS PFAS notes6 Months 01/01/2026 - 06/30/2026 73 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP FOR WELLS SOC  3 Years 01/01/2026 - 12/31/2028 988 1 incomplete10/01/2025
EP-A  EP FOR WELLS VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 988 1 incomplete12/19/2022

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