OHA Drinking Water Services
OR41
PWS ID: 00939 ---- WESTFIR, CITY OF

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 notes3 Years01/01/2027 - 12/31/2027   5 09/26/2024
  Seasonal sampling period:   06/01   thru   09/30
DIST-A  Distribution System STAGE 2 DBP notesYearly 01/01/2026 - 12/31/2026 291 1 incomplete08/22/2025
  Seasonal sampling period:   08/01   thru   08/31
EP-A  EP FOR NORTH FORK OF WILLAMETTE ARSENIC notes9 Years 01/01/2020 - 12/31/2028 1,022 1 incomplete11/19/2019
EP-A  EP FOR NORTH FORK OF WILLAMETTE IOC notes9 Years 01/01/2020 - 12/31/2028 1,022 1 incomplete11/19/2019
EP-A  EP FOR NORTH FORK OF WILLAMETTE NITRATE  Yearly 01/01/2026 - 12/31/2026 291 1 incomplete12/15/2025
EP-A  EP FOR NORTH FORK OF WILLAMETTE NITRITE notes9 Years 01/01/2020 - 12/31/2028 1,022 1 incomplete11/19/2019
EP-A  EP FOR NORTH FORK OF WILLAMETTE PFAS notesQuarterly 01/01/2026 - 03/31/2026 16 1 incomplete
  Initial monitoring - 4 quarters only
EP-A  EP FOR NORTH FORK OF WILLAMETTE RAD - GROSS ALPHA  6 Years 01/01/2023 - 12/31/2028 1,022 1 incomplete11/23/2022
EP-A  EP FOR NORTH FORK OF WILLAMETTE RAD - RADIUM 226/228notes9 Years 01/01/2026 - 12/31/2034 3,213 1 incomplete10/11/2016
EP-A  EP FOR NORTH FORK OF WILLAMETTE RAD - URANIUM notes9 Years 01/01/2026 - 12/31/2034 3,213 1 incomplete10/11/2016
EP-A  EP FOR NORTH FORK OF WILLAMETTE SOC  3 Years 01/01/2026 - 12/31/2028 1,022 1 incomplete12/15/2025
EP-A  EP FOR NORTH FORK OF WILLAMETTE VOLATILE ORGANICS  Yearly 01/01/2026 - 12/31/2026 291 1 incomplete12/15/2025

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Expired Schedules
Facility
ID		 Analyte or Group    Sampling
Interval		 Start End Samples
Required		    Notes
CH-A  COMMON HEADER FOR WTP-ATOTAL ORGANIC CARBON  Monthly01/01/200411/30/20081Raw Water TOC Only Required for Reduction in DBP Monitoring
DIST-A  Distribution SystemHAA5 & TTHM  Yearly01/01/200412/31/20131Sample between June 1 and Sept. 30.
DIST-A  Distribution SystemLEAD & COPPER  Yearly01/01/200212/31/20025Sample Between June 1st and Sept 30th
EP-A  EP FOR NORTH FORK OF WILLAMETTERAD - GROSS ALPHA  9 Years01/01/200812/31/20161Schedule reflects monitoring reduction granted.
SRC-AA  NORTH FORK OF WILLAMETTECYANOTOXINS  2 Weeks07/15/201801/24/20191

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