OHA Drinking Water Services
Related:  Coliform Schedules

PWS ID: 00665 ---- TUALATIN VALLEY WATER DISTRICT

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 Months07/01/2022 - 12/31/2022 24 100 done 10/13/2022
DIST-A  DISTRIBUTION SYSTEM STAGE 2 DBP notesQuarterly10/01/2022 - 12/31/2022 24 8 incomplete09/14/2022
EP-C  EP FOR WELL 1 - GRABHORN ASR ARSENIC notes9 Years01/01/2017 - 12/31/2025 1,120 1 done 05/13/2021
EP-C  EP FOR WELL 1 - GRABHORN ASR IOC notes9 Years01/01/2017 - 12/31/2025 1,120 1 done 11/04/2020
EP-C  EP FOR WELL 1 - GRABHORN ASR NITRATE  Yearly01/01/2022 - 12/31/2022 24 1 incomplete05/13/2021
EP-C  EP FOR WELL 1 - GRABHORN ASR NITRITE notes9 Years01/01/2017 - 12/31/2025 1,120 1 done 05/13/2021
EP-C  EP FOR WELL 1 - GRABHORN ASR RAD - GROSS ALPHA notes9 Years01/01/2020 - 12/31/2028 2,216 1 done 11/04/2020
EP-C  EP FOR WELL 1 - GRABHORN ASR RAD - RADIUM 226/228notes9 Years01/01/2014 - 12/31/2022 24 1 done 11/04/2020
EP-C  EP FOR WELL 1 - GRABHORN ASR RAD - URANIUM notes9 Years01/01/2014 - 12/31/2022 24 1 done 11/04/2020
EP-C  EP FOR WELL 1 - GRABHORN ASR SOC notes3 Years01/01/2020 - 12/31/2022 24 2 done 11/04/2020
EP-C  EP FOR WELL 1 - GRABHORN ASR VOLATILE ORGANICS  3 Years01/01/2020 - 12/31/2022 24 1 done 11/04/2020

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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 :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 4065