OHA Drinking Water Services
OR41
PWS ID: 00399 ---- INDEPENDENCE WATER SYSTEM

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 ASBESTOS, DIST notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete12/02/2019
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2026 - 12/31/2026   30incomplete09/06/2023
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 253 2 incomplete08/06/2025
  Seasonal sampling period:   08/01   thru   08/31
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) ARSENIC  9 Years 01/01/2020 - 12/31/2028 984 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) IOC notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) NITRATE  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete03/05/2025
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) NITRITE notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) PFAS notesQuarterly 04/01/2026 - 06/30/2026 69 1 incomplete11/20/2023
  Initial monitoring - 4 quarters only
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete09/05/2018
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) SOC notes3 Years 01/01/2026 - 12/31/2028 984 2 incomplete07/09/2025
EP-A  EP FOR SOUTH WELLFIELD (5 WELLS) VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete05/07/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD ARSENIC  9 Years 01/01/2020 - 12/31/2028 984 1 incomplete07/17/2019
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD IOC notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete08/02/2011
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD NITRATE  Yearly 01/01/2026 - 12/31/2026 253 1 incomplete03/05/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD NITRITE notes9 Years 01/01/2020 - 12/31/2028 984 1 incomplete08/02/2011
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD PFAS notesQuarterly 04/01/2026 - 06/30/2026 69 1 incomplete11/20/2023
  Initial monitoring - 4 quarters only
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete07/30/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete07/30/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,175 1 incomplete07/30/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD SOC notes3 Years 01/01/2026 - 12/31/2028 984 2 incomplete07/09/2025
EP-B  EP FOR POLK ST/RIVER DR WELLFIELD VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 984 1 incomplete05/07/2025

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