OHA Drinking Water Services
OR41
PWS ID: 00225 ---- CORVALLIS, CITY OF
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.

Monitoring
Period
Date
Received
Entry
Point
< CFE 95 %
Turbidity
MCL
< CFE Max
Turbidity
MCL
IFE
Triggers
Met
CT's
Required
Met
Chlorine
at Entry
Point
May 01, 2024 Jun 04, 2024 WTP-AYYYYY
May 01, 2024 Jun 04, 2024 WTP-BYYYYY
Apr 01, 2024 May 06, 2024 WTP-AYYYYY
Apr 01, 2024 May 06, 2024 WTP-BYYYYY
Mar 01, 2024 Apr 08, 2024 WTP-AYYYYY
Mar 01, 2024 Apr 08, 2024 WTP-BYYYYY
Feb 01, 2024 Mar 05, 2024 WTP-AYYYYY
Feb 01, 2024 Mar 05, 2024 WTP-BYYYYY
Jan 01, 2024 Feb 07, 2024 WTP-AYYYYY
Jan 01, 2024 Feb 07, 2024 WTP-BYYYYY
Dec 01, 2023 Jan 05, 2024 WTP-AYYYYY
Dec 01, 2023 Jan 05, 2024 WTP-BYYYYY
Nov 01, 2023 Dec 07, 2023 WTP-AYYYYY
Nov 01, 2023 Dec 07, 2023 WTP-BYYYYY
Oct 01, 2023 Nov 06, 2023 WTP-AYYYYY
Oct 01, 2023 Nov 06, 2023 WTP-BYYYYY
Sep 01, 2023 Oct 09, 2023 WTP-AYYYYY
Sep 01, 2023 Oct 09, 2023 WTP-BYYYYY
Aug 01, 2023 Sep 05, 2023 WTP-AYYYYY
Aug 01, 2023 Sep 05, 2023 WTP-BYYYYY
Jul 01, 2023 Aug 04, 2023 WTP-AYYYYY
Jul 01, 2023 Aug 04, 2023 WTP-BYYYYY
Jun 01, 2023 Jul 05, 2023 WTP-AYYYYY
Jun 01, 2023 Jul 05, 2023 WTP-BYYYYY
May 01, 2023 Jun 05, 2023 WTP-AYYYYY
May 01, 2023 Jun 05, 2023 WTP-BYYYYY
Apr 01, 2023 May 05, 2023 WTP-AYYYYY
Apr 01, 2023 May 05, 2023 WTP-BYYYYY
Mar 01, 2023 Apr 07, 2023 WTP-AYYYYY
Mar 01, 2023 Apr 07, 2023 WTP-BYYYYY
Feb 01, 2023 Mar 07, 2023 WTP-AYYYYY
Feb 01, 2023 Mar 07, 2023 WTP-BYYYYY
Jan 01, 2023 Feb 07, 2023 WTP-AYYYYY
Jan 01, 2023 Feb 07, 2023 WTP-BYYYYY
Dec 01, 2022 Jan 09, 2023 WTP-AYYYYY
Dec 01, 2022 Jan 09, 2023 WTP-BYYYYY
Nov 01, 2022 Dec 06, 2022 WTP-AYYYYY
Nov 01, 2022 Dec 06, 2022 WTP-BYYYYY
Oct 01, 2022 Nov 03, 2022 WTP-AYYYYY
Oct 01, 2022 Nov 03, 2022 WTP-BYYYYY
Sep 01, 2022 Oct 08, 2022 WTP-AYYYYY
Sep 01, 2022 Oct 08, 2022 WTP-BYYYYY
Aug 01, 2022 Sep 06, 2022 WTP-AYYYYY
Aug 01, 2022 Sep 06, 2022 WTP-BYYYYY
Jul 01, 2022 Aug 04, 2022 WTP-AYYYYY
Jul 01, 2022 Aug 04, 2022 WTP-BYYYYY
Jun 01, 2022 Jul 07, 2022 WTP-AYYYYY
Jun 01, 2022 Jul 07, 2022 WTP-BYYYYY
May 01, 2022 Jun 03, 2022 WTP-AYYYYY
May 01, 2022 Jun 03, 2022 WTP-BYYYYY
Apr 01, 2022 May 05, 2022 WTP-AYYYYY
Apr 01, 2022 May 05, 2022 WTP-BYYYYY
Mar 01, 2022 Apr 05, 2022 WTP-AYYYYY
Mar 01, 2022 Apr 05, 2022 WTP-BYYYYY
Feb 01, 2022 Mar 04, 2022 WTP-AYYYYY
Feb 01, 2022 Mar 04, 2022 WTP-BYYYYY
Jan 01, 2022 Feb 07, 2022 WTP-AYYYYY
Jan 01, 2022 Feb 07, 2022 WTP-BYYYYY
Dec 01, 2021 Jan 05, 2022 WTP-AYYYYY
Dec 01, 2021 Jan 05, 2022 WTP-BYYYYY
Nov 01, 2021 Dec 06, 2021 WTP-AYYYYY
Nov 01, 2021 Dec 06, 2021 WTP-BYYYYY
Oct 01, 2021 Nov 03, 2021 WTP-AYYYYY
Oct 01, 2021 Nov 03, 2021 WTP-BYYYYY
Sep 01, 2021 Oct 07, 2021 WTP-AYYYYY
Sep 01, 2021 Oct 07, 2021 WTP-BYYYYY
Aug 01, 2021 Sep 07, 2021 WTP-AYYYYY
Aug 01, 2021 Sep 07, 2021 WTP-BYYYYY
Jul 01, 2021 Aug 03, 2021 WTP-AYYYYY
Jul 01, 2021 Aug 03, 2021 WTP-BYYYYY
Jun 01, 2021 Jul 07, 2021 WTP-AYYYYY
Jun 01, 2021 Jul 07, 2021 WTP-BYYYYY
May 01, 2021 Jun 04, 2021 WTP-AYYYYY
May 01, 2021 Jun 04, 2021 WTP-BYYYYY
Apr 01, 2021 May 05, 2021 WTP-AYYYYY
Apr 01, 2021 May 05, 2021 WTP-BYYYYY
Mar 01, 2021 Apr 07, 2021 WTP-AYYYYY
Mar 01, 2021 Apr 07, 2021 WTP-BYYYYY
Feb 01, 2021 Mar 05, 2021 WTP-AYYYYY
Feb 01, 2021 Mar 05, 2021 WTP-BYYYYY
Jan 01, 2021 Feb 04, 2021 WTP-AYYYYY
Jan 01, 2021 Feb 04, 2021 WTP-BYYYYY
Dec 01, 2020 Jan 06, 2021 WTP-AYYYYY
Dec 01, 2020 Jan 06, 2021 WTP-BYYYYY
Nov 01, 2020 Dec 09, 2020 WTP-AYYYYY
Nov 01, 2020 Dec 09, 2020 WTP-BYYYYY
Oct 01, 2020 Nov 23, 2020
Late
WTP-AYYYYY
Oct 01, 2020 Nov 23, 2020
Late
WTP-BYYYYY
Sep 01, 2020 Oct 07, 2020 WTP-AYYYYY
Sep 01, 2020 Oct 07, 2020 WTP-BYYYYY
Aug 01, 2020 Sep 03, 2020 WTP-AYYYYY
Aug 01, 2020 Sep 03, 2020 WTP-BYYYYY
Jul 01, 2020 Aug 05, 2020 WTP-AYYYYY
Jul 01, 2020 Aug 05, 2020 WTP-BYYYYY
Jun 01, 2020 Jul 09, 2020 WTP-AYYYYY
Jun 01, 2020 Jul 09, 2020 WTP-BYYYYY
May 01, 2020 Jun 08, 2020 WTP-AYYYYY
May 01, 2020 Jun 08, 2020 WTP-BYYYYY
Apr 01, 2020 May 05, 2020 WTP-AYYYYY
Apr 01, 2020 May 05, 2020 WTP-BYYYYY
Mar 01, 2020 Apr 06, 2020 WTP-AYYYYY
Mar 01, 2020 Apr 06, 2020 WTP-BYYYYY
Feb 01, 2020 Mar 04, 2020 WTP-AYYYYY
Feb 01, 2020 Mar 04, 2020 WTP-BYYYYY
Jan 01, 2020 Feb 06, 2020 WTP-AYYYYY
Jan 01, 2020 Feb 06, 2020 WTP-BYYYYY
Dec 01, 2019 Jan 13, 2020
Late
WTP-AYYYYY
Dec 01, 2019 Jan 13, 2020
Late
WTP-BYYYYY
Nov 01, 2019 Dec 05, 2019 WTP-AYYYYY
Nov 01, 2019 Dec 05, 2019 WTP-BYYYYY
Oct 01, 2019 Nov 06, 2019 WTP-AYYYYY
Oct 01, 2019 Nov 06, 2019 WTP-BYYYYY
Sep 01, 2019 Oct 08, 2019 WTP-AYYYYY
Sep 01, 2019 Oct 08, 2019 WTP-BYYYYY
Aug 01, 2019 Sep 05, 2019 WTP-AYYYYY
Aug 01, 2019 Sep 05, 2019 WTP-BYYYYY
Jul 01, 2019 Aug 06, 2019 WTP-AYYYYY
Jul 01, 2019 Aug 06, 2019 WTP-BYYYYY
Jun 01, 2019 (pdf) Jul 05, 2019 WTP-AYYYYY
Jun 01, 2019 (pdf) Jul 05, 2019 WTP-BYYYYY
May 01, 2019 Jun 07, 2019 WTP-AYYYYY
May 01, 2019 Jun 07, 2019 WTP-BYYYYY
Apr 01, 2019 May 07, 2019 WTP-AYYYYY
Apr 01, 2019 May 07, 2019 WTP-BYYYYY
Mar 01, 2019 Apr 09, 2019 WTP-AYYYYY
Mar 01, 2019 Apr 09, 2019 WTP-BYYYYY
Feb 01, 2019 Mar 07, 2019 WTP-AYYYYY
Feb 01, 2019 Mar 07, 2019 WTP-BYYYYY
Jan 01, 2019 Feb 05, 2019 WTP-AYYYYY
Jan 01, 2019 Feb 05, 2019 WTP-BYYYYY
Dec 01, 2018 Jan 08, 2019 WTP-AYYYYY
Dec 01, 2018 Jan 08, 2019 WTP-BYYYYY
Nov 01, 2018 Dec 04, 2018 WTP-AYYYYY
Nov 01, 2018 Dec 04, 2018 WTP-BYYYYY
Oct 01, 2018 Nov 08, 2018 WTP-AYYYYY
Oct 01, 2018 Nov 08, 2018 WTP-BYYYYY
Sep 01, 2018 Oct 09, 2018 WTP-AYYYYY
Sep 01, 2018 Oct 09, 2018 WTP-BYYYYY
Aug 01, 2018 Sep 06, 2018 WTP-AYYYYY
Aug 01, 2018 Sep 06, 2018 WTP-BYYYYY
Jul 01, 2018 Aug 08, 2018 WTP-AYYYYY
Jul 01, 2018 Aug 08, 2018 WTP-BYYYYY
Jun 01, 2018 Jul 05, 2018 WTP-AYYYYY
Jun 01, 2018 Jul 05, 2018 WTP-BYYYYY
May 01, 2018 Jun 07, 2018 WTP-AYYYYY
May 01, 2018 Jun 07, 2018 WTP-BYYYYY
Apr 01, 2018 May 03, 2018 WTP-AYYYYY
Apr 01, 2018 May 03, 2018 WTP-BYYYYY
Mar 01, 2018 Apr 02, 2018 WTP-AYYYYY
Mar 01, 2018 Apr 02, 2018 WTP-BYYYYY
Feb 01, 2018 Mar 05, 2018 WTP-AYYYYY
Feb 01, 2018 Mar 05, 2018 WTP-BYYYYY
Jan 01, 2018 Feb 07, 2018 WTP-AYYYYY
Jan 01, 2018 Feb 07, 2018 WTP-BYYYYY
Dec 01, 2017 Jan 08, 2018 WTP-AYYYYY
Dec 01, 2017 Jan 08, 2018 WTP-BYYYYY
Nov 01, 2017 Dec 07, 2017 WTP-AYYYYY
Nov 01, 2017 Dec 07, 2017 WTP-BYYYYY
Oct 01, 2017 Nov 03, 2017 WTP-AYYYYY
Oct 01, 2017 Nov 03, 2017 WTP-BYYYYY
Sep 01, 2017 Oct 05, 2017 WTP-AYYYYY
Sep 01, 2017 Oct 05, 2017 WTP-BYYYYY
Aug 01, 2017 Sep 20, 2017
Late
WTP-AYYYYY
Aug 01, 2017 Sep 20, 2017
Late
WTP-BYYYYY
Jul 01, 2017 Aug 04, 2017 WTP-AYYYYY
Jul 01, 2017 Aug 04, 2017 WTP-BYYYYY
Jun 01, 2017 Jul 06, 2017 WTP-AYYYYY
Jun 01, 2017 Jul 06, 2017 WTP-BYYYYY
May 01, 2017 Jun 06, 2017 WTP-AYYYYY
May 01, 2017 Jun 06, 2017 WTP-BYYYYY
Apr 01, 2017 May 05, 2017 WTP-AYYYYY
Apr 01, 2017 May 05, 2017 WTP-BYYYYY
Mar 01, 2017 Apr 07, 2017 WTP-AYYYYY
Mar 01, 2017 Apr 07, 2017 WTP-BYYYYY
Feb 01, 2017 Mar 08, 2017 WTP-AYYYYY
Feb 01, 2017 Mar 08, 2017 WTP-BYYYYY
Jan 01, 2017 Feb 09, 2017 WTP-AYYYYY
Jan 01, 2017 Feb 09, 2017 WTP-BYYYYY
Dec 01, 2016 Jan 06, 2017 WTP-AYYYYY
Dec 01, 2016 Jan 06, 2017 WTP-BYYYYY
Nov 01, 2016 Dec 07, 2016 WTP-AYYYYY
Nov 01, 2016 Dec 07, 2016 WTP-BYYYYY
Oct 01, 2016 Nov 07, 2016 WTP-AYYYYY
Oct 01, 2016 Nov 07, 2016 WTP-BYYYYY
Sep 01, 2016 Oct 07, 2016 WTP-AYYYYY
Sep 01, 2016 Oct 07, 2016 WTP-BYYYYY
Aug 01, 2016 Sep 08, 2016 WTP-AYYYYY
Aug 01, 2016 Sep 08, 2016 WTP-BYYYYY
Jul 01, 2016 Aug 08, 2016 WTP-AYYYYY
Jul 01, 2016 Aug 08, 2016 WTP-BYYYYY
Jun 01, 2016 Jul 08, 2016 WTP-AYYYYY
Jun 01, 2016 Jul 08, 2016 WTP-BYYYYY
May 01, 2016 Jun 06, 2016 WTP-AYYYYY
May 01, 2016 Jun 06, 2016 WTP-BYYYYY
Apr 01, 2016 May 06, 2016 WTP-AYYYYY
Apr 01, 2016 May 06, 2016 WTP-BYYYYY
Mar 01, 2016 Apr 05, 2016 WTP-AYYYYY
Mar 01, 2016 Apr 05, 2016 WTP-BYYYYY
Feb 01, 2016 Mar 04, 2016 WTP-AYYYYY
Feb 01, 2016 Mar 04, 2016 WTP-BYYYYY
Jan 01, 2016 Feb 09, 2016 WTP-AYYYYY
Jan 01, 2016 Feb 09, 2016 WTP-BYYYYY
Dec 01, 2015 Jan 08, 2016 WTP-AYYYYY
Dec 01, 2015 Jan 08, 2016 WTP-BYYYYY
Nov 01, 2015 Dec 07, 2015 WTP-AYYYYY
Nov 01, 2015 Dec 07, 2015 WTP-BYYYYY
Oct 01, 2015 Nov 09, 2015 WTP-AYYYYY
Oct 01, 2015 Nov 09, 2015 WTP-BYYYYY
Sep 01, 2015 Oct 07, 2015 WTP-AYYYYY
Sep 01, 2015 Oct 07, 2015 WTP-BYYYYY
Aug 01, 2015 Sep 08, 2015 WTP-AYYYYY
Aug 01, 2015 Sep 08, 2015 WTP-BYYYYY
Jul 01, 2015 Aug 04, 2015 WTP-AYYYYY
Jul 01, 2015 Aug 04, 2015 WTP-BYYYYY
Jun 01, 2015 Jul 07, 2015 WTP-AYYYYY
Jun 01, 2015 Jul 07, 2015 WTP-BYYYYY
May 01, 2015 Jun 08, 2015 WTP-AYYYYY
May 01, 2015 Jun 08, 2015 WTP-BYYYYY
Apr 01, 2015 May 07, 2015 WTP-AYYYYY
Apr 01, 2015 May 07, 2015 WTP-BYYYYY
Mar 01, 2015 Apr 03, 2015 WTP-AYYYYY
Mar 01, 2015 Apr 03, 2015 WTP-BYYYYY
Feb 01, 2015 Mar 06, 2015 WTP-AYYYYY
Feb 01, 2015 Mar 06, 2015 WTP-BYYYYY
Jan 01, 2015 Feb 03, 2015 WTP-AYYYYY
Jan 01, 2015 Feb 03, 2015 WTP-BYYYYY
Dec 01, 2014 Jan 08, 2015 WTP-AYYYYY
Dec 01, 2014 Jan 08, 2015 WTP-BYYYYY
Nov 01, 2014 Dec 05, 2014 WTP-AYYYYY
Nov 01, 2014 Dec 05, 2014 WTP-BYYYYY
Oct 01, 2014 Nov 05, 2014 WTP-AYYYYY
Oct 01, 2014 Nov 05, 2014 WTP-BYYYYY
Sep 01, 2014 Oct 03, 2014 WTP-AYYYYY
Sep 01, 2014 Oct 03, 2014 WTP-BYYYYY
Aug 01, 2014 Sep 04, 2014 WTP-AYYYYY
Aug 01, 2014 Sep 04, 2014 WTP-BYYYYY
Jul 01, 2014 Aug 05, 2014 WTP-AYYYYY
Jul 01, 2014 Aug 05, 2014 WTP-BYYYYY
Jun 01, 2014 Jul 07, 2014 WTP-AYYYYY
Jun 01, 2014 Jul 07, 2014 WTP-BYYYYY
May 01, 2014 Jun 06, 2014 WTP-AYYYYY
May 01, 2014 Jun 06, 2014 WTP-BYYYYY
Apr 01, 2014 May 06, 2014 WTP-AYYYYY
Apr 01, 2014 May 06, 2014 WTP-BYYYYY
Mar 01, 2014 Apr 08, 2014 WTP-AYYYYY
Mar 01, 2014 Apr 08, 2014 WTP-BYYYYY
Feb 01, 2014 Mar 07, 2014 WTP-AYYYYY
Feb 01, 2014 Mar 07, 2014 WTP-BYYYYY
Jan 01, 2014 Feb 07, 2014 WTP-AYYYYY
Jan 01, 2014 Feb 07, 2014 WTP-BYYYYY
Dec 01, 2013 Jan 08, 2014 WTP-AYYYYY
Dec 01, 2013 Jan 08, 2014 WTP-BYYYYY
Nov 01, 2013 Dec 05, 2013 WTP-AYYYYY
Nov 01, 2013 Dec 05, 2013 WTP-BYYYYY
Oct 01, 2013 Nov 06, 2013 WTP-AYYYYY
Oct 01, 2013 Nov 06, 2013 WTP-BYYYYY
Sep 01, 2013 Oct 07, 2013 WTP-AYYYYY
Sep 01, 2013 Oct 07, 2013 WTP-BYYYYY
Aug 01, 2013 Sep 05, 2013 WTP-AYYYYY
Aug 01, 2013 Sep 05, 2013 WTP-BYYYYY
Jul 01, 2013 Aug 07, 2013 WTP-AYYYYY
Jul 01, 2013 Aug 07, 2013 WTP-BYYYYY
Jun 01, 2013 Jul 03, 2013 WTP-AYYYYY
Jun 01, 2013 Jul 03, 2013 WTP-BYYYYY
May 01, 2013 Jun 05, 2013 WTP-AYYYYY
May 01, 2013 Jun 05, 2013 WTP-BYYYYY
Apr 01, 2013 May 07, 2013 WTP-AYYYYY
Apr 01, 2013 May 07, 2013 WTP-BYYYYY
Mar 01, 2013 Apr 04, 2013 WTP-AYYYYY
Mar 01, 2013 Apr 04, 2013 WTP-BYYYYY
Feb 01, 2013 Mar 05, 2013 WTP-AYYYYY
Feb 01, 2013 Mar 05, 2013 WTP-BYYYYY
Jan 01, 2013 Feb 04, 2013 WTP-AYYYYY
Jan 01, 2013 Feb 04, 2013 WTP-BYYYYY
Dec 01, 2012 Jan 07, 2013 WTP-AYYYYY
Dec 01, 2012 Jan 07, 2013 WTP-BYYYYY
Nov 01, 2012 Dec 06, 2012 WTP-AYYYYY
Nov 01, 2012 Dec 06, 2012 WTP-BYYYYY
Oct 01, 2012 Nov 06, 2012 WTP-AYYYYY
Oct 01, 2012 Nov 06, 2012 WTP-BYYYYY
Sep 01, 2012 Oct 05, 2012 WTP-AYYYYY
Sep 01, 2012 Oct 05, 2012 WTP-BYYYYY
Aug 01, 2012 Sep 05, 2012 WTP-AYYYYY
Aug 01, 2012 Sep 05, 2012 WTP-BYYYYY
Jul 01, 2012 Aug 06, 2012 WTP-AYYYYY
Jul 01, 2012 Aug 06, 2012 WTP-BYYYYY
Jun 01, 2012 Jul 07, 2012 WTP-AYYYYY
Jun 01, 2012 Jul 07, 2012 WTP-BYYYYY
May 01, 2012 Jun 07, 2012 WTP-AYYYYY
May 01, 2012 Jun 07, 2012 WTP-BYYYYY
Apr 01, 2012 May 08, 2012 WTP-AYYYYY
Apr 01, 2012 May 08, 2012 WTP-BYYYYY
Mar 01, 2012 Apr 05, 2012 WTP-AYYYYY
Mar 01, 2012 Apr 13, 2012
Late
WTP-BYYYYY
Feb 01, 2012 Mar 06, 2012 WTP-AYYYYY
Feb 01, 2012 Mar 06, 2012 WTP-BYYYYY
Jan 01, 2012 Feb 09, 2012 WTP-AYYYYY
Jan 01, 2012 Feb 09, 2012 WTP-BYYYYY



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