OHA Drinking Water Services
OR41
PWS ID: 93668 ---- MADRONA ELEMENTARY

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 Years01/01/2027 - 12/31/2027   5 07/11/2024
  Seasonal sampling period:   06/01   thru   09/30
EP-A  EP for WELL ARSENIC notes9 Years 01/01/2023 - 12/31/2031 2,098 1 incomplete07/06/2022
EP-A  EP for WELL IOC notes9 Years 01/01/2020 - 12/31/2028 1,003 1 incomplete04/23/2019
EP-A  EP for WELL NITRATE  Yearly01/01/2026 - 12/31/2026 272 1 done 01/02/2026
EP-A  EP for WELL NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,003 1 incomplete04/23/2019
EP-A  EP for WELL PFAS notes6 Months 01/01/2026 - 06/30/2026 88 1 incomplete
  Initial monitoring - 2 samples only
EP-A  EP for WELL SOC  3 Years 01/01/2026 - 12/31/2028 1,003 1 incomplete04/07/2025
EP-A  EP for WELL VOLATILE ORGANICS  3 Years 01/01/2026 - 12/31/2028 1,003 1 incomplete04/07/2025

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