OHA Drinking Water Services
PWS ID: 00665 ---- TUALATIN VALLEY WATER DISTRICT

Corrosion Control (LCR)

Minimums Required For This System
Facility pH Alkalinity Phosphate Silicate Required Frequency Last Modified
 
-- indicates that the system is not required to test for that parameter
* Entry point readings can be taken daily but are required at least every 14 days.
DIST-A 7.4 -- -- -- 6 Months Jan 17, 2018
EP-C 7.4 -- -- -- * Jan 17, 2018


Test Results
Period Facility Excursions
This Period
Total Excursions
For 6-Month
Monitoring Period
Date Received
 
Oct 2022 (pdf) EP-C 0 0 Nov 09, 2022
Sep 2022 (pdf) DIST-A 0 Oct 06, 2022
Sep 2022 (pdf) EP-C 0 Oct 06, 2022
Aug 2022 (pdf) EP-C 0 Sep 08, 2022
Jul 2022 (pdf) EP-C 0 Aug 05, 2022
Jun 2022 (pdf) EP-C 0 0 Jul 07, 2022
May 2022 (pdf) DIST-A 0 Jun 08, 2022
May 2022 (pdf) EP-C 0 Jun 08, 2022 - Requirement not met*
Apr 2022 (pdf) EP-C 0 May 10, 2022
Mar 2022 (pdf) EP-C 0 Apr 06, 2022
Feb 2022 (pdf) EP-C 0 Mar 04, 2022
Jan 2022 (pdf) DIST-A 0 Feb 09, 2022
Jan 2022 (pdf) EP-C 0 Feb 09, 2022
Dec 2021 (pdf) EP-C 0 0 Jan 06, 2022
Nov 2021 (pdf) DIST-A 0 Dec 07, 2021
Nov 2021 (pdf) EP-C 0 Dec 07, 2021
Oct 2021 (pdf) EP-C 0 Nov 03, 2021
Sep 2021 (pdf) DIST-A 0 Oct 01, 2021
Sep 2021 (pdf) EP-C 0 Oct 01, 2021
Aug 2021 (pdf) EP-C 0 Sep 09, 2021
Jul 2021 (pdf) EP-C 0 Aug 09, 2021
Jun 2021 (pdf) DIST-A 0 0 Jul 07, 2021
Jun 2021 (pdf) EP-C 0 Jul 07, 2021
May 2021 (pdf) EP-C 0 Jun 10, 2021
Apr 2021 (pdf) EP-C 0 May 09, 2021
Mar 2021 (pdf) DIST-A 0 Apr 07, 2021
Mar 2021 (pdf) EP-C 0 Apr 07, 2021
Feb 2021 (pdf) EP-C 0 Mar 08, 2021
Jan 2021 (pdf) EP-C 0 Feb 09, 2021
Dec 2020 EP-C 0 0 Jan 07, 2021
Nov 2020 DIST-A 0 Dec 09, 2020
Nov 2020 EP-C 0 Dec 09, 2020
Oct 2020 EP-C 0 Nov 05, 2020
Sep 2020 EP-C 0 Oct 08, 2020
Aug 2020 DIST-A 0 Sep 02, 2020
Aug 2020 EP-C 0 Sep 02, 2020
Jul 2020 EP-C 0 Aug 07, 2020
Jun 2020 EP-C 0 0 Jul 07, 2020
May 2020 EP-C 0 Jun 08, 2020
Apr 2020 DIST-A 0 May 05, 2020
Apr 2020 EP-C 0 May 05, 2020
Mar 2020 EP-C 0 Apr 09, 2020
Feb 2020 DIST-A 0 Mar 10, 2020
Feb 2020 EP-C 0 Mar 10, 2020
Jan 2020 DIST-A 0 Feb 06, 2020
Jan 2020 EP-C 0 Feb 05, 2020
Dec 2019 EP-C 0 0 Jan 08, 2020
Nov 2019 DIST-A 0 Dec 06, 2019
Sep 2019 EP-C 0 Oct 01, 2019
Aug 2019 EP-C 0 Oct 01, 2019
Jul 2019 DIST-A 0 Aug 06, 2019
Jul 2019 EP-C 0 Oct 01, 2019
Jun 2019 EP-C 0 0 Oct 01, 2019
Apr 2019 DIST-A 0 May 09, 2019
Jan 2019 DIST-A 0 Feb 07, 2019
Oct 2018 DIST-A 0 0 Nov 06, 2018
Sep 2018 EP-C 0 Oct 08, 2018
Aug 2018 EP-C 0 Sep 06, 2018
Jul 2018 DIST-A 0 Aug 08, 2018
Jul 2018 EP-C 0 Aug 08, 2018
Jun 2018 EP-C 0 0 Jul 06, 2018
Apr 2018 DIST-A 0 Jul 06, 2018
Jan 2018 DIST-A 0 Feb 07, 2018
Jul 2017 EP-A 0 0 Aug 01, 2017



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