OHA Drinking Water Services
OR41
PWS ID: 00602 ---- GUPTIL 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 Years01/01/2028 - 12/31/2028   5 06/22/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 253 1 incomplete09/08/2025
  Seasonal sampling period:   08/01   thru   08/31
EP-A  EP for WELL #1 ARSENIC  9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete12/18/2019
EP-A  EP for WELL #1 IOC notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete12/18/2019
EP-A  EP for WELL #1 NITRATE  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete09/22/2025
EP-A  EP for WELL #1 NITRITE notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete12/18/2019
EP-A  EP for WELL #1 PFAS notes6 Months 01/01/2026 - 06/30/2026 69 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP for WELL #1 RAD - GROSS ALPHA  9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete07/02/2018
EP-A  EP for WELL #1 RAD - RADIUM 226/228 6 Years 01/01/2026 - 12/31/2031 2,079 1 incomplete09/22/2025
EP-A  EP for WELL #1 RAD - URANIUM  9 Years 01/01/2020 - 12/31/2028 984 1 incomplete07/02/2018
EP-A  EP for WELL #1 SOC  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete10/27/2025
EP-A  EP for WELL #1 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete09/22/2025

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