OHA Drinking Water Services
OR41
PWS ID: 00403 ---- IRRIGON, CITY OF

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 Years01/01/2020 - 12/31/2028 1,003 1 done 04/09/2024
DIST-A  DISTRIBUTION SYSTEM LEAD & COPPER notes3 Years01/01/2026 - 12/31/2026   10incomplete07/01/2025
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 272 1 incomplete12/01/2025
  Seasonal sampling period:   11/01   thru   11/30
EP-B  EP FOR WELLS 3 & 4 ARSENIC  9 Years 01/01/2026 - 12/31/2034 3,194 1 incomplete03/01/2018
EP-B  EP FOR WELLS 3 & 4 IOC notes9 Years 01/01/2020 - 12/31/2028 1,003 1 incomplete03/01/2018
EP-B  EP FOR WELLS 3 & 4 NITRATE  Yearly 01/01/2026 - 12/31/2026 272 1 incomplete01/02/2025
EP-B  EP FOR WELLS 3 & 4 NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,003 1 incomplete03/01/2018
EP-B  EP FOR WELLS 3 & 4 PFAS notes6 Months 01/01/2026 - 06/30/2026 88 1 incomplete11/17/2021
  Initial monitoring - 2 samples only
EP-B  EP FOR WELLS 3 & 4 RAD - GROSS ALPHA  6 Years 01/01/2026 - 12/31/2031 2,098 1 incomplete03/01/2022
EP-B  EP FOR WELLS 3 & 4 RAD - RADIUM 226/228 9 Years 01/01/2023 - 12/31/2031 2,098 1 incomplete06/10/2019
EP-B  EP FOR WELLS 3 & 4 RAD - URANIUM  9 Years 01/01/2023 - 12/31/2031 2,098 1 incomplete06/10/2019
EP-B  EP FOR WELLS 3 & 4 SOC  3 Years 01/01/2026 - 12/31/2028 1,003 1 incomplete08/04/2025
EP-B  EP FOR WELLS 3 & 4 VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,003 1 incomplete08/04/2025

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