OHA Drinking Water Services
OR41
PWS ID: 00954 ---- WILSONVILLE, CITY OF
Maximum Residual Disinfection Level (MRDL) Samples
MRDL Monitoring Requirements :: Excel Spreadsheet

Monitoring
Period		 Entry
Point		 Samples
Required		 Samples
Collected		 Period
Avg		 Annual
Avg		 Level
Compliance
Apr 01, 2025 DIST-A 30 30 0.62 0.8Y
Mar 01, 2025 DIST-A 30 30 0.87 0.8Y
Feb 01, 2025 DIST-A 30 30 0.8 0.8Y
Jan 01, 2025 DIST-A 30 30 0.73 0.8Y
Dec 01, 2024 DIST-A 30 30 1 0.8Y
Nov 01, 2024 DIST-A 30 30 0.84 0.8Y
Oct 01, 2024 DIST-A 30 30 0.80 0.8Y
Sep 01, 2024 DIST-A 30 30 0.86 0.8Y
Aug 01, 2024 DIST-A 30 30 0.85 0.7Y
Jul 01, 2024 DIST-A 30 30 0.8 0.7Y
Jun 01, 2024 DIST-A 30 30 0.79 0.7Y
May 01, 2024 DIST-A 30 30 0.67 0.7Y
Apr 01, 2024 DIST-A 30 30 0.85 0.7Y
Mar 01, 2024 DIST-A 30 30 0.80 0.7Y
Feb 01, 2024 DIST-A 30 30 0.90 0.7Y
Jan 01, 2024 DIST-A 30 30 0.79 0.6Y
Dec 01, 2023 DIST-A 33 34 0.57 0.6Y
Nov 01, 2023 DIST-A 33 34 0.6 0.6Y
Oct 01, 2023 DIST-A 30 30 0.54 0.6Y
Sep 01, 2023 DIST-A 30 30 0.54 0.7Y
Aug 01, 2023 DIST-A 30 30 0.56 0.7Y
Jul 01, 2023 DIST-A 30 30 0.67 0.7Y
Jun 01, 2023 DIST-A 30 30 0.75 0.7Y
May 01, 2023 DIST-A 30 30 0.7 0.7Y
Apr 01, 2023 DIST-A 30 30 0.7 0.7Y
Mar 01, 2023 DIST-A 30 30 0.64 0.7Y
Feb 01, 2023 DIST-A 30 30 0.7 0.7Y
Jan 01, 2023 DIST-A 30 30 0.60 0.7Y
Dec 01, 2022 DIST-A 30 30 0.62 0.7Y
Nov 01, 2022 DIST-A 30 30 0.67 0.7Y
Oct 01, 2022 DIST-A 30 30 0.67 0.7Y
Sep 01, 2022 DIST-A 30 30 0.8 0.7Y
Aug 01, 2022 DIST-A 30 30 0.67 0.7Y
Jul 01, 2022 DIST-A 30 30 0.74 0.7Y
Jun 01, 2022 DIST-A 30 30 0.72 0.6Y
May 01, 2022 DIST-A 30 30 0.55 0.6Y
Apr 01, 2022 DIST-A 30 30 0.74 0.6Y
Mar 01, 2022 DIST-A 30 30 0.8 0.6Y
Feb 01, 2022 DIST-A 30 30 0.80 0.6Y
Jan 01, 2022 DIST-A 30 30 0.73 0.6Y
Dec 01, 2021 DIST-A 30 30 0.7 0.6Y
Nov 01, 2021 DIST-A 30 30 0.50 0.6Y
Oct 01, 2021 DIST-A 30 30 0.55 0.6Y
Sep 01, 2021 DIST-A 30 30 0.59 0.6Y
Aug 01, 2021 DIST-A 30 30 0.48 0.6Y
Jul 01, 2021 DIST-A 30 30 0.6 0.6Y
Jun 01, 2021 DIST-A 25 25 0.65 0.6Y
May 01, 2021 DIST-A 25 25 0.52 0.6Y
Apr 01, 2021 DIST-A 25 25 0.60 0.6Y
Mar 01, 2021 DIST-A 25 25 0.63 0.5Y
Feb 01, 2021 DIST-A 25 25 0.59 0.5Y
Jan 01, 2021 DIST-A 25 25 0.62 0.5Y
Dec 01, 2020 DIST-A 25 25 0.50 0.5Y
Nov 01, 2020 DIST-A 25 25 0.46 0.5Y
Oct 01, 2020 DIST-A 25 25 0.52 0.6Y
Sep 01, 2020 DIST-A 25 25 0.61 0.6Y
Aug 01, 2020 DIST-A 25 25 0.6 0.6Y
Jul 01, 2020 DIST-A 25 25 0.51 0.6Y
Jun 01, 2020 DIST-A 28 28 0.51 0.6Y
May 01, 2020 DIST-A 25 25 0.50 0.6Y
Apr 01, 2020 DIST-A 25 25 0.51 0.6Y
Mar 01, 2020 DIST-A 25 25 0.61 0.6Y
Feb 01, 2020 DIST-A 25 25 0.52 0.6Y
Jan 01, 2020 DIST-A 25 25 0.6 0.6Y
Dec 01, 2019 DIST-A 28 27 0.6 0.6Y
Nov 01, 2019 DIST-A 25 25 0.6 0.6Y
Oct 01, 2019 DIST-A 25 25 0.63 0.6Y
Sep 01, 2019 DIST-A 25 25 0.6 0.6Y
Aug 01, 2019 DIST-A 25 25 0.66 0.6Y
Jul 01, 2019 DIST-A 25 25 0.68 0.6Y
Jun 01, 2019 DIST-A 25 25 0.6 0.6Y
May 01, 2019 DIST-A 25 25 0.63 0.6Y
Apr 01, 2019 DIST-A 25 25 0.5 0.6Y
Mar 01, 2019 DIST-A 25 25 0.57 0.6Y
Feb 01, 2019 DIST-A 25 25 0.50 0.6Y
Jan 01, 2019 DIST-A 25 25 0.53 0.6Y
Dec 01, 2018 DIST-A 25 25 0.49 0.6Y
Nov 01, 2018 DIST-A 25 25 0.49 0.6Y
Oct 01, 2018 DIST-A 25 25 0.6 0.6Y
Sep 01, 2018 DIST-A 25 25 0.59 0.6Y
Aug 01, 2018 DIST-A 25 25 0.67 0.6Y
Jul 01, 2018 DIST-A 25 25 0.54 0.6Y
Jun 01, 2018 DIST-A 25 25 0.66 0.6Y
May 01, 2018 DIST-A 25 25 0.64 0.6Y
Apr 01, 2018 DIST-A 25 25 0.68 0.6Y
Mar 01, 2018 DIST-A 25 25 0.77 0.6Y
Feb 01, 2018 DIST-A 25 25 0.7 0.6Y
Jan 01, 2018 DIST-A 25 25 0.76 0.6Y
Dec 01, 2017 DIST-A 25 25 0.6 0.6Y
Nov 01, 2017 DIST-A 28 28 0.55 0.6Y
Oct 01, 2017 DIST-A 25 25 0.55 0.6Y
Sep 01, 2017 DIST-A 25 25 0.6 0.6Y
Aug 01, 2017 DIST-A 25 24 0.6 0.6Y
Jul 01, 2017 DIST-A 25 25 0.57 0.6Y
Jun 01, 2017 DIST-A 25 25 0.68 0.6Y
May 01, 2017 DIST-A 25 25 0.63 0.6Y
Apr 01, 2017 DIST-A 25 25 0.63 0.6Y
Mar 01, 2017 DIST-A 25 20 0.56 0.6Y
Feb 01, 2017 DIST-A 20 20 0.55 0.6Y
Jan 01, 2017 DIST-A 20 20 0.61 0.6Y
Dec 01, 2016 DIST-A 20 20 0.53 0.6Y
Nov 01, 2016 DIST-A 20 20 0.44 0.6Y
Oct 01, 2016 DIST-A 20 20 0.51 0.6Y
Sep 01, 2016 DIST-A 20 20 0.60 0.6Y
Aug 01, 2016 DIST-A 20 20 0.62 0.6Y
Jul 01, 2016 DIST-A 20 20 0.6 0.6Y
Jun 01, 2016 DIST-A 20 20 0.67 0.6Y
May 01, 2016 DIST-A 20 20 0.6 0.6Y
Apr 01, 2016 DIST-A 20 20 0.60 0.6Y
Mar 01, 2016 DIST-A 20 20 0.59 0.6Y
Feb 01, 2016 DIST-A 20 20 0.7 0.6Y
Jan 01, 2016 DIST-A 20 20 0.6 0.6Y
Dec 01, 2015 DIST-A 20 20 0.61 0.6Y
Nov 01, 2015 DIST-A 20 20 0.6 0.6Y
Oct 01, 2015 DIST-A 20 20 0.66 0.6Y
Sep 01, 2015 DIST-A 20 20 0.7 0.6Y
Aug 01, 2015 DIST-A 20 20 0.65 0.6Y
Jul 01, 2015 DIST-A 20 20 0.64 0.6Y
Jun 01, 2015 DIST-A 20 20 0.7 0.6Y
May 01, 2015 DIST-A 20 20 0.65 0.6Y
Apr 01, 2015 DIST-A 20 20 0.68 0.6Y
Mar 01, 2015 DIST-A 20 20 0.57 0.6Y
Feb 01, 2015 DIST-A 20 20 0.55 0.6Y
Jan 01, 2015 DIST-A 20 20 0.59 0.6Y
Dec 01, 2014 DIST-A 20 20 0.56 0.7Y
Nov 01, 2014 DIST-A 20 20 0.6 0.7Y
Oct 01, 2014 DIST-A 20 20 0.62 0.7Y
Sep 01, 2014 DIST-A 20 20 0.66 0.7Y
Aug 01, 2014 DIST-A 20 20 0.68 0.7Y
Jul 01, 2014 DIST-A 20 20 0.70 0.7Y
Jun 01, 2014 DIST-A 20 20 0.74 0.7Y
May 01, 2014 DIST-A 20 20 0.65 0.7Y
Apr 01, 2014 DIST-A 20 20 0.71 0.7Y
Mar 01, 2014 DIST-A 20 20 0.63 0.7Y
Feb 01, 2014 DIST-A 20 20 0.65 0.7Y
Jan 01, 2014 DIST-A 20 20 0.7 0.7Y
Dec 01, 2013 DIST-A 20 20 0.73 0.7Y
Nov 01, 2013 DIST-A 20 20 0.7 0.7Y
Oct 01, 2013 DIST-A 23 23 0.7 0.7Y
Sep 01, 2013 DIST-A 20 20 0.75 0.7Y
Aug 01, 2013 DIST-A 20 20 0.70 0.7Y
Jul 01, 2013 DIST-A 20 20 0.70 0.7Y
Jun 01, 2013 DIST-A 20 20 0.68 0.7Y
May 01, 2013 DIST-A 20 20 0.68 0.7Y
Apr 01, 2013 DIST-A 20 20 0.7 0.7Y
Mar 01, 2013 DIST-A 20 20 0.78 0.7Y
Feb 01, 2013 DIST-A 20 20 0.77 0.7Y
Jan 01, 2013 DIST-A 20 20 0.7 0.7Y
Dec 01, 2012 DIST-A 20 20 0.56 0.7Y
Nov 01, 2012 DIST-A 20 20 0.62 0.7Y
Oct 01, 2012 DIST-A 20 20 0.67 0.7Y
Sep 01, 2012 DIST-A 20 20 0.74 0.7Y
Aug 01, 2012 DIST-A 20 20 0.77 0.7Y
Jul 01, 2012 DIST-A 20 20 0.74 0.7Y
Jun 01, 2012 DIST-A 20 20 0.7 0.7Y
May 01, 2012 DIST-A 20 20 0.74 0.7Y
Apr 01, 2012 DIST-A 20 20 0.71 0.7Y
Mar 01, 2012 DIST-A 20 20 0.72 0.7Y
Feb 01, 2012 DIST-A 20 20 0.73 0.7Y
Jan 01, 2012 DIST-A 20 20 0.70 0.7Y
Dec 01, 2011 DIST-A 20 20 0.66 0.7Y
Nov 01, 2011 DIST-A 20 20 0.63 0.7Y
Oct 01, 2011 DIST-A 20 20 0.80 0.7Y
Sep 01, 2011 DIST-A 20 20 0.69 0.7Y
Aug 01, 2011 DIST-A 20 20 0.71 0.7Y
Jul 01, 2011 DIST-A 20 20 0.72 0.7Y
Jun 01, 2011 DIST-A 20 20 0.77 0.7Y
May 01, 2011 DIST-A 20 20 0.79 0.7Y
Apr 01, 2011 DIST-A 20 20 0.71 0.7Y
Mar 01, 2011 DIST-A 20 20 0.63 0.7Y
Feb 01, 2011 DIST-A 20 20 0.68 0.7Y
Jan 01, 2011 DIST-A 20 20 0.62 0.7Y
Dec 01, 2010 DIST-A 20 20 0.56 0.7Y
Nov 01, 2010 DIST-A 20 20 0.63 0.7Y
Oct 01, 2010 DIST-A 20 20 0.69 0.7Y
Sep 01, 2010 DIST-A 20 20 0.69 0.7Y
Aug 01, 2010 DIST-A 20 20 0.69 0.7Y
Jul 01, 2010 DIST-A 20 20 0.77 0.7Y
Jun 01, 2010 DIST-A 20 20 0.71 0.7Y
May 01, 2010 DIST-A 20 20 0.72 0.7Y
Apr 01, 2010 DIST-A 20 20 0.67 0.6Y
Mar 01, 2010 DIST-A 20 20 0.59 0.6Y
Feb 01, 2010 DIST-A 20 20 0.60 0.6Y
Jan 01, 2010 DIST-A 20 20 0.73 0.6Y
Dec 01, 2009 DIST-A 20 20 0.6000 0.6Y
Nov 01, 2009 DIST-A 20 20 0.61 0.6Y
Oct 01, 2009 DIST-A 20 20 0.66 0.6Y
Sep 01, 2009 DIST-A 20 20 0.60 0.6Y
Aug 01, 2009 DIST-A 20 20 0.75 0.6Y
Jul 01, 2009 DIST-A 20 20 0.8 0.6Y
Jun 01, 2009 DIST-A 23 23 0.8 0.6Y
May 01, 2009 DIST-A 20 20 0.6Y
Apr 01, 2009 DIST-A 20 20 0.69 0.6Y
Mar 01, 2009 DIST-A 20 20 0.7 0.6Y
Feb 01, 2009 DIST-A 20 21 0.68 0.6Y
Jan 01, 2009 DIST-A 20 20 0.73 0.6Y
Jan 01, 2009 DIST-A 20 20 0.7 0.6Y
Dec 01, 2008 DIST-A 15 20 0.7 0.6Y
Dec 01, 2008 DIST-A 15 20 0.66 0.6Y
Nov 01, 2008 DIST-A 15 20 0.51 0.6Y
Nov 01, 2008 DIST-A 15 20 0.6 0.6Y
Oct 01, 2008 DIST-A 15 20 0.5 0.6Y
Oct 01, 2008 DIST-A 15 20 0.50 0.6Y
Sep 01, 2008 DIST-A 15 20 0.56 0.6Y
Sep 01, 2008 DIST-A 15 20 0.6 0.6Y
Aug 01, 2008 DIST-A 15 20 0.6 0.6Y
Aug 01, 2008 DIST-A 15 20 0.61 0.6Y
Jul 01, 2008 DIST-A 15 20 0.64 0.6Y
Jul 01, 2008 DIST-A 15 20 0.6 0.6Y
Jun 01, 2008 DIST-A 15 20 0.6 0.6Y
Jun 01, 2008 DIST-A 15 20 0.65 0.6Y
May 01, 2008 DIST-A 15 20 0.71 0.6Y
May 01, 2008 DIST-A 15 20 0.71 0.6Y
Apr 01, 2008 DIST-A 15 20 0.69 0.6Y
Apr 01, 2008 DIST-A 15 20 0.70 0.6Y
Mar 01, 2008 DIST-A 15 20 0.64 0.6Y
Mar 01, 2008 DIST-A 15 20 0.6 0.6Y
Feb 01, 2008 DIST-A 15 20 0.5 0.6Y
Feb 01, 2008 DIST-A 15 20 0.53 0.6Y
Jan 01, 2008 DIST-A 15 20 0.51 0.6Y
Jan 01, 2008 DIST-A 15 20 0.5 0.6Y
Dec 01, 2007 DIST-A 15 20 0.5 0.6Y
Dec 01, 2007 DIST-A 15 20 0.50 0.6Y
Nov 01, 2007 DIST-A 15 20 0.56 0.6Y
Nov 01, 2007 DIST-A 15 20 0.6 0.6Y
Oct 01, 2007 DIST-A 15 20 0.6 0.6Y
Oct 01, 2007 DIST-A 15 20 0.64 0.6Y
Sep 01, 2007 DIST-A 15 20 0.69 0.6Y
Sep 01, 2007 DIST-A 15 20 0.7 0.6Y
Aug 01, 2007 DIST-A 15 20 0.6 0.6Y
Aug 01, 2007 DIST-A 15 20 0.62 0.6Y
Jul 01, 2007 DIST-A 15 20 0.66 0.7Y
Jul 01, 2007 DIST-A 15 20 0.7 0.7Y
Jun 01, 2007 DIST-A 15 17 0.6 0.7Y
Jun 01, 2007 DIST-A 15 17 0.65 0.7Y
May 01, 2007 DIST-A 15 17 0.66 0.7Y
May 01, 2007 DIST-A 15 17 0.66 0.7Y
Apr 01, 2007 DIST-A 15 17 0.6 0.7Y
Apr 01, 2007 DIST-A 15 17 0.63 0.7Y
Mar 01, 2007 DIST-A 0 17 0.66 0.7Y
Mar 01, 2007 DIST-A 15 17 0.66 0.7Y
Feb 01, 2007 DIST-A 15 17 0.6 0.8Y
Feb 01, 2007 DIST-A 15 17 0.64 0.8Y
Jan 01, 2007 DIST-A 15 17 0.67 0.8Y
Jan 01, 2007 DIST-A 15 17 0.7 0.8Y
Dec 01, 2006 DIST-A 15 17 0.6 0.8Y
Dec 01, 2006 DIST-A 0 17 0.63 0.8Y
Nov 01, 2006 DIST-A 0 17 0.61 0.8Y
Nov 01, 2006 DIST-A 15 17 0.6 0.8Y
Oct 01, 2006 DIST-A 15 17 0.65 0.8Y
Oct 01, 2006 DIST-A 0 17 0.65 0.8Y
Sep 01, 2006 DIST-A 15 17 0.63 0.8Y
Sep 01, 2006 DIST-A 15 17 0.80 0.8Y
Aug 01, 2006 DIST-A 15 17 0.89 0.9Y
Jul 01, 2006 DIST-A 15 17 0.95 0.8Y
Jul 01, 2006 DIST-A 15 17 0.75 0.8Y
Jun 01, 2006 DIST-A 15 17 0.79 0.8Y
Jun 01, 2006 DIST-A 15 17 0.98 0.8Y
May 01, 2006 DIST-A 15 17 1.06 0.8Y
May 01, 2006 DIST-A 15 17 0.86 0.8Y
Apr 01, 2006 DIST-A 15 17 0.74 0.8Y
Apr 01, 2006 DIST-A 15 17 0.9 0.8Y
Mar 01, 2006 DIST-A 15 17 1 0.8Y
Mar 01, 2006 DIST-A 15 17 0.75 0.8Y
Feb 01, 2006 DIST-A 15 17 0.70 0.8Y
Feb 01, 2006 DIST-A 15 17 0.87 0.8Y
Jan 01, 2006 DIST-A 15 17 0.87 0.8Y
Jan 01, 2006 DIST-A 15 17 0.68 0.8Y
Dec 01, 2005 DIST-A 15 17 0.73 0.8Y
Dec 01, 2005 DIST-A 15 17 0.91 0.8Y
Nov 01, 2005 DIST-A 15 17 0.93 0.8Y
Nov 01, 2005 DIST-A 15 17 0.75 0.8Y
Oct 01, 2005 DIST-A 15 17 0.80 0.8Y
Oct 01, 2005 DIST-A 15 17 1.11 0.8Y
Sep 01, 2005 DIST-A 15 17 0.88 0.8Y
Sep 01, 2005 DIST-A 15 17 0.71 0.8Y
Aug 01, 2005 DIST-A 15 17 0.75 0.8Y
Aug 01, 2005 DIST-A 15 17 0.88 0.8Y
Jul 01, 2005 DIST-A 15 17 0.9 0.8Y
Jul 01, 2005 DIST-A 15 17 0.67 0.8Y
Jun 01, 2005 DIST-A 15 17 0.61 0.8Y
Jun 01, 2005 DIST-A 15 17 0.88 0.8Y
May 01, 2005 DIST-A 15 17 0.70 0.8Y
May 01, 2005 DIST-A 15 17 0.50 0.8Y
Apr 01, 2005 DIST-A 15 17 0.90 0.8Y
Apr 01, 2005 DIST-A 15 17 1.21 0.8Y
Mar 01, 2005 DIST-A 15 17 0.81 0.7Y
Mar 01, 2005 DIST-A 15 17 0.70 0.7Y
Feb 01, 2005 DIST-A 15 17 0.70 0.7Y
Feb 01, 2005 DIST-A 15 17 0.81 0.7Y
Jan 01, 2005 DIST-A 15 17 0.91 0.7Y
Jan 01, 2005 DIST-A 15 17 0.71 0.7Y
Dec 01, 2004 DIST-A 15 17 0.72 0.7Y
Dec 01, 2004 DIST-A 15 17 0.9 0.7Y
Nov 01, 2004 DIST-A 15 17 0.83 0.7Y
Nov 01, 2004 DIST-A 15 17 0.70 0.7Y
Oct 01, 2004 DIST-A 15 17 0.81 0.7Y
Sep 01, 2004 DIST-A 15 17 0.7 0.6Y
Sep 01, 2004 DIST-A 15 17 0.51 0.6Y
 



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