OHA Drinking Water Services
OR41
PWS ID: 00657 ---- PORTLAND WATER BUREAU
Surface Water Treatment Rule

MRDL Summary

Abbreviations:  CFE = Combined filter effluent, CT = Contact time, IFE = Individual filter effluent, MCL = Maximum contaminant level, MRDL = Maximum residual disinfection level, N = No (requirement was not met), WTP = Water treatment plant, Y = Yes (requirement was met).

Results not meeting criteria are outlined in red.


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Monitoring
Period
Date
Received
Entry
Point
< CFE 95 %
Turbidity
MCL
< CFE Max
Turbidity
MCL
CT's
Required
Met
Chlorine
at Entry
Point
May 01, 2022 Jun 09, 2022 WTP-AYYYY
Apr 01, 2022 May 09, 2022 WTP-AYYYY
Mar 01, 2022 Apr 07, 2022 WTP-AYYYY
Feb 01, 2022 Mar 09, 2022 WTP-AYYYY
Jan 01, 2022 Feb 09, 2022 WTP-AYYYY
Dec 01, 2021 Jan 07, 2022 WTP-AYYYY
Nov 01, 2021 Dec 09, 2021 WTP-AYYYY
Oct 01, 2021 Nov 05, 2021 WTP-AYYYY
Sep 01, 2021 Oct 07, 2021 WTP-AYYYY
Aug 01, 2021 Sep 09, 2021 WTP-AYYYY
Jul 01, 2021 Aug 09, 2021 WTP-AYYYY
Jun 01, 2021 Jul 08, 2021 WTP-AYYYY
May 01, 2021 Jun 09, 2021 WTP-AYYYY
Apr 01, 2021 May 07, 2021 WTP-AYYYY
Mar 01, 2021 Apr 08, 2021 WTP-AYYYY
Feb 01, 2021 Mar 09, 2021 WTP-AYYYY
Jan 01, 2021 Feb 09, 2021 WTP-AYYYY
Dec 01, 2020 Jan 08, 2021 WTP-AYYYY
Nov 01, 2020 Dec 10, 2020 WTP-AYYYY
Oct 01, 2020 Nov 09, 2020 WTP-AYYYY
Sep 01, 2020 Oct 09, 2020 WTP-AYYYY
Aug 01, 2020 Sep 09, 2020 WTP-AYYYY
Jul 01, 2020 Aug 07, 2020 WTP-AYYYY
Jun 01, 2020 Jul 09, 2020 WTP-AYYYY
May 01, 2020 Jun 09, 2020 WTP-AYYYY
Apr 01, 2020 May 07, 2020 WTP-AYYYY
Mar 01, 2020 Apr 09, 2020 WTP-AYYYY
Feb 01, 2020 Mar 09, 2020 WTP-AYYYY
Jan 01, 2020 Feb 06, 2020 WTP-AYYYY
Dec 01, 2019 Jan 09, 2020 WTP-AYYYY
Nov 01, 2019 Dec 09, 2019 WTP-AYYYY
Oct 01, 2019 Nov 07, 2019 WTP-AYYYY
Sep 01, 2019 Oct 09, 2019 WTP-AYYYY
Aug 01, 2019 Sep 10, 2019 WTP-AYYYY
Jul 01, 2019 Aug 07, 2019 WTP-AYYYY
Jun 01, 2019 Jul 09, 2019 WTP-AYYYY
May 01, 2019 Jun 07, 2019 WTP-AYYYY
Apr 01, 2019 May 09, 2019 WTP-AYYYY
Mar 01, 2019 Apr 09, 2019 WTP-AYYYY
Feb 01, 2019 Mar 07, 2019 WTP-AYYYY
Jan 01, 2019 Feb 07, 2019 WTP-AYYYY
Dec 01, 2018 Jan 09, 2019 WTP-AYYYY
Nov 01, 2018 Dec 07, 2018 WTP-AYYYY
Oct 01, 2018 Nov 08, 2018 WTP-AYYYY
Sep 01, 2018 Oct 09, 2018 WTP-AYYYY
Aug 01, 2018 Sep 07, 2018 WTP-AYYYY
Jul 01, 2018 Aug 09, 2018 WTP-AYYYY
Jun 01, 2018 Jul 10, 2018 WTP-AYYYY
May 01, 2018 Jun 07, 2018 WTP-AYYYY
Apr 01, 2018 May 09, 2018 WTP-AYYYY
Mar 01, 2018 Apr 09, 2018 WTP-AYYYY
Feb 01, 2018 Mar 08, 2018 WTP-AYYYY
Jan 01, 2018 Feb 08, 2018 WTP-AYYYY
Dec 01, 2017 Jan 08, 2018 WTP-AYYYY
Nov 01, 2017 Dec 08, 2017 WTP-AYYYY
Oct 01, 2017 Nov 09, 2017 WTP-AYYYY
Sep 01, 2017 Oct 09, 2017 WTP-AYYYY
Aug 01, 2017 Sep 08, 2017 WTP-AYYYY
Jul 01, 2017 Aug 09, 2017 WTP-AYYYY
Jun 01, 2017 Jul 10, 2017 WTP-AYYYY
May 01, 2017 Jun 08, 2017 WTP-AYYYY
Apr 01, 2017 May 10, 2017 WTP-AYYYY
Mar 01, 2017 Apr 10, 2017 WTP-AYYYY
Feb 01, 2017 Mar 10, 2017 WTP-AYYYY
Jan 01, 2017 Feb 09, 2017 WTP-AYYYY
Dec 01, 2016 Jan 09, 2017 WTP-AYYYY
Nov 01, 2016 Dec 08, 2016 WTP-AYYYY
Oct 01, 2016 Nov 10, 2016 WTP-AYYYY
Sep 01, 2016 Oct 07, 2016 WTP-AYYYY
Aug 01, 2016 Sep 08, 2016 WTP-AYYYY
Jul 01, 2016 Aug 09, 2016 WTP-AYYYY
Jun 01, 2016 Jul 07, 2016 WTP-AYYYY
May 01, 2016 Jun 10, 2016 WTP-AYYYY
Apr 01, 2016 May 10, 2016 WTP-AYYYY
Mar 01, 2016 Apr 08, 2016 WTP-AYYYY
Feb 01, 2016 Mar 10, 2016 WTP-AYYYY
Jan 01, 2016 Feb 09, 2016 WTP-AYYYY
Dec 01, 2015 Jan 08, 2016 WTP-AYYYY
Nov 01, 2015 Dec 09, 2015 WTP-AYYYY
Oct 01, 2015 Nov 10, 2015 WTP-AYYYY
Sep 01, 2015 Oct 09, 2015 WTP-AYYYY
Aug 01, 2015 Sep 09, 2015 WTP-AYYYY
Jul 01, 2015 Aug 10, 2015 WTP-AYYYY
Jun 01, 2015 Jul 10, 2015 WTP-AYYYY
May 01, 2015 May 10, 2015 WTP-AYYYY
Apr 01, 2015 May 07, 2015 WTP-AYYYY
Mar 01, 2015 Apr 09, 2015 WTP-AYYYY
Feb 01, 2015 Mar 10, 2015 WTP-AYNYY
Jan 01, 2015 Feb 10, 2015 WTP-AYYYY
Dec 01, 2014 Jan 09, 2015 WTP-AYYYY
Nov 01, 2014 Dec 10, 2014 WTP-AYYYY
Oct 01, 2014 Nov 10, 2014 WTP-AYYYY
Sep 01, 2014 Oct 09, 2014 WTP-AYYYY
Aug 01, 2014 Sep 10, 2014 WTP-AYYYY
Jul 01, 2014 Aug 07, 2014 WTP-AYYYY
Jun 01, 2014 Jul 10, 2014 WTP-AYYYY
May 01, 2014 Jun 10, 2014 WTP-AYYYY
Apr 01, 2014 May 06, 2014 WTP-AYYYY
Mar 01, 2014 Apr 10, 2014 WTP-AYYYY
Feb 01, 2014 Mar 10, 2014 WTP-AYYYY
Jan 01, 2014 Feb 10, 2014 WTP-AYYYY
Dec 01, 2013 Jan 10, 2014 WTP-AYYYY
Nov 01, 2013 Dec 10, 2013 WTP-AYYYY
Oct 01, 2013 Nov 08, 2013 WTP-AYYYY
Sep 01, 2013 Oct 10, 2013 WTP-AYYYY
Aug 01, 2013 Sep 10, 2013 WTP-AYYYY
Jul 01, 2013 Aug 09, 2013 WTP-AYYYY
Jun 01, 2013 Jul 10, 2013 WTP-AYYYY
May 01, 2013 Jun 10, 2013 WTP-AYYYY
Apr 01, 2013 May 09, 2013 WTP-AYYYY
Mar 01, 2013 Apr 09, 2013 WTP-AYYYY
Feb 01, 2013 Mar 07, 2013 WTP-AYYYY
Jan 01, 2013 Feb 07, 2013 WTP-AYYYY
Dec 01, 2012 Jan 02, 2013 WTP-AYYYY
Nov 01, 2012 Dec 10, 2012 WTP-AYYYY
Oct 01, 2012 Nov 08, 2012 WTP-AYYYY
Sep 01, 2012 Oct 10, 2012 WTP-AYYYY
Aug 01, 2012 Sep 07, 2012 WTP-AYYYY
Jul 01, 2012 Aug 09, 2012 WTP-AYYYY
Jun 01, 2012 Jul 10, 2012 WTP-AYYYY
May 01, 2012 Jun 08, 2012 WTP-AYYYY
Apr 01, 2012 May 09, 2012 WTP-AYYYY
Mar 01, 2012 Apr 10, 2012 WTP-AYYYY
Feb 01, 2012 Mar 08, 2012 WTP-AYYYY
Jan 01, 2012 Feb 10, 2012 WTP-AYYYY



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