OHA Drinking Water Services
Related:  Coliform Schedules  ::  LT2 Schedules

PWS ID: 00379 ---- JOINT WATER COMMISSION

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
CH-A  COMMON HEADER FOR WTP-A TOC & ALKALINITY notesQuarterly01/01/2022 - 03/31/2022 64 1 incomplete12/08/2021
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesYearly01/01/2022 - 12/31/2022 339 1 incomplete07/08/2021
 Seasonal sampling period:  07/01  thru  07/31
EP-A  EP FOR TUALATIN RIVERHEXACHLOROCYCLOPENTADIENE  Quarterly01/01/2022 - 03/31/2022 64 1 incomplete 11/03/2021
EP-A  EP FOR TUALATIN RIVER ARSENIC notes9 Years01/01/2020 - 12/31/2028 2,531 1 done 11/03/2021
EP-A  EP FOR TUALATIN RIVER IOC notes9 Years01/01/2020 - 12/31/2028 2,531 1 done 11/03/2021
EP-A  EP FOR TUALATIN RIVER NITRATE  Yearly01/01/2022 - 12/31/2022 339 1 incomplete11/03/2021
EP-A  EP FOR TUALATIN RIVER NITRITE notes9 Years01/01/2020 - 12/31/2028 2,531 1 done 11/03/2021
EP-A  EP FOR TUALATIN RIVER RAD - GROSS ALPHA notes9 Years01/01/2017 - 12/31/2025 1,435 1 done 04/07/2021
EP-A  EP FOR TUALATIN RIVER RAD - RADIUM 226/228 9 Years01/01/2014 - 12/31/2022 339 1 done 04/07/2021
EP-A  EP FOR TUALATIN RIVER RAD - URANIUM notes9 Years01/01/2017 - 12/31/2025 1,435 1 done 04/07/2021
EP-A  EP FOR TUALATIN RIVER SOC notes3 Years01/01/2020 - 12/31/2022 339 2 done 11/03/2021
EP-A  EP FOR TUALATIN RIVER VOLATILE ORGANICS  Yearly01/01/2022 - 12/31/2022 339 1 incomplete11/03/2021
SRC-AA  TUALATIN RIVER CYANOTOXINS  2 Weeks-- -- -- -- --10/18/2021
 Seasonal sampling period:  05/01  thru  10/31
WTP-A  TP FOR TUALATIN RIVERTOTAL ORGANIC CARBONnotesMonthly01/01/2022 - 01/31/2022 5 1 incomplete 12/08/2021

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Expired Schedules
Facility
ID
Analyte or Group    Sampling
Interval
Start End Samples
Required
   Notes
CH-A  COMMON HEADER FOR WTP-ATOC & ALKALINITY  Monthly01/01/200212/31/20051Raw and filtered TOC and alkalinity
DIST-A  DISTRIBUTION SYSTEMHAA5 & TTHM  Quarterly01/01/200206/30/20084Reflects 4 RT Samples Per QT Per WTP
EP-A  EP FOR TUALATIN RIVERARSENIC  Yearly01/01/200212/31/20101
EP-A  EP FOR TUALATIN RIVERHEXACHLOROCYCLOPENTADIENE   Quarterly01/01/201912/31/20191
EP-A  EP FOR TUALATIN RIVERHEXACHLOROCYCLOPENTADIENE   Yearly01/01/202012/31/20211Collect sample between October 1 and December 31.
EP-A  EP FOR TUALATIN RIVERRAD - RADIUM 226/228  6 Years01/01/200812/31/20131
WTP-A  TP FOR TUALATIN RIVERTOTAL ORGANIC CARBON  Monthly01/01/200212/31/20051Post Filtration TOC
WTP-A  TP FOR TUALATIN RIVERTOTAL ORGANIC CARBON  Quarterly01/01/200612/31/20191Post Filtration TOC

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For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3889