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 253 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 8 1 incomplete02/24/2026
EP-A  EP FOR WELLS IOC  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete11/18/2025
EP-A  EP FOR WELLS NITRATE  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete11/18/2025
EP-A  EP FOR WELLS NITRITE  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete11/18/2025
EP-A  EP FOR WELLS PFAS notesQuarterly 04/01/2026 - 06/30/2026 69 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR WELLS RAD - GROSS ALPHA  6 Years 01/01/2026 - 12/31/2031 2,079 1 incomplete11/18/2025
EP-A  EP FOR WELLS RAD - RADIUM 226/228 6 Years 01/01/2026 - 12/31/2031 2,079 1 incomplete11/18/2025
EP-A  EP FOR WELLS RAD - URANIUM  6 Years 01/01/2026 - 12/31/2031 2,079 1 incomplete11/18/2025
EP-A  EP FOR WELLS SOC  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete11/18/2025
EP-A  EP FOR WELLS VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete11/18/2025

5  secs
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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
DIST-A  DISTRIBUTION SYSTEMLEAD & COPPER  6 Months01/01/201812/31/20195
DIST-A  DISTRIBUTION SYSTEMSTAGE 2 DBP  Yearly01/01/202212/31/20222IDSE study. Collect dual sample sets at 2DBP-01 and 2DBP-02. Sample in warmest month.
EP-A  EP FOR WELLSARSENIC  Quarterly10/01/201706/30/20251
EP-A  EP FOR WELLSRAD - GROSS ALPHA  Quarterly10/01/201712/31/20181
EP-A  EP FOR WELLSRAD - RADIUM 226/228  Quarterly10/01/201712/31/20181
EP-A  EP FOR WELLSRAD - URANIUM  Quarterly10/01/201712/31/20181
EP-A  EP FOR WELLSSOC  Yearly01/01/201812/31/20201
EP-A  EP FOR WELLSVOLATILE ORGANICS  Yearly01/01/201812/31/20201

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