OHA Drinking Water Services
OR41
PWS ID: 00304 ---- ALDERWOOD WATER DEV CO

See also: Coliform Schedules  ::  LT2 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  6 Months 01/01/2026 - 06/30/2026 68 5 incomplete11/30/2025
DIST-A  Distribution System STAGE 2 DBP  Quarterly 04/01/2026 - 06/30/2026 68 1 incomplete10/21/2025
EP-A  EP FOR WOAHINK LAKE ARSENIC  9 Years 01/01/2020 - 12/31/2028 983 1 incomplete09/20/2016
EP-A  EP FOR WOAHINK LAKE IOC notes9 Years 01/01/2023 - 12/31/2031 2,078 1 incomplete09/20/2016
EP-A  EP FOR WOAHINK LAKE NITRATE  Yearly 01/01/2026 - 12/31/2026 252 1 incomplete02/04/2025
EP-A  EP FOR WOAHINK LAKE NITRITE notes9 Years 01/01/2023 - 12/31/2031 2,078 1 incomplete09/20/2016
EP-A  EP FOR WOAHINK LAKE PFAS notesQuarterly 04/01/2026 - 06/30/2026 68 1 incomplete12/17/2025
  Initial monitoring - 4 quarters only
EP-A  EP FOR WOAHINK LAKE RAD - GROSS ALPHA notes9 Years 01/01/2026 - 12/31/2034 3,174 1 incomplete05/06/2025
EP-A  EP FOR WOAHINK LAKE RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,174 1 incomplete05/06/2025
EP-A  EP FOR WOAHINK LAKE RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,174 1 incomplete05/06/2025
EP-A  EP FOR WOAHINK LAKE SOC  3 Years 01/01/2026 - 12/31/2028 983 1 incomplete10/21/2025
EP-A  EP FOR WOAHINK LAKE VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 252 1 incomplete10/21/2025

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