OHA Drinking Water Services
OR41
PWS ID: 06155 ---- MANZANITA HILLS SUBDIVISION

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 Years01/01/2026 - 12/31/2026   5 09/16/2022
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 259 1 incomplete08/29/2025
  Seasonal sampling period:   08/01   thru   08/31
EP-A  EP FOR WELLS ARSENIC  Monthly 04/01/2026 - 04/30/2026 14 1 incomplete02/24/2026
EP-A  EP FOR WELLS IOC  3 Years 01/01/2026 - 12/31/2028 990 1 incomplete11/18/2025
EP-A  EP FOR WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 259 1 incomplete11/18/2025
EP-A  EP FOR WELLS NITRITE  3 Years 01/01/2026 - 12/31/2028 990 1 incomplete11/18/2025
EP-A  EP FOR WELLS PFAS notesQuarterly 04/01/2026 - 06/30/2026 75 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR WELLS RAD - GROSS ALPHA  6 Years 01/01/2026 - 12/31/2031 2,085 1 incomplete11/18/2025
EP-A  EP FOR WELLS RAD - RADIUM 226/228 6 Years 01/01/2026 - 12/31/2031 2,085 1 incomplete11/18/2025
EP-A  EP FOR WELLS RAD - URANIUM  6 Years 01/01/2026 - 12/31/2031 2,085 1 incomplete11/18/2025
EP-A  EP FOR WELLS SOC  3 Years 01/01/2026 - 12/31/2028 990 1 incomplete11/18/2025
EP-A  EP FOR WELLS VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 990 1 incomplete11/18/2025

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