OHA Drinking Water Services
OR41
PWS ID: 00461 ---- RIVERGROVE WATER DISTRICT
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
Mar 01, 2026 DIST-A 4 4 0.44 0.5Y
Feb 01, 2026 DIST-A 4 4 0.45 0.5Y
Jan 01, 2026 DIST-A 4 4 0.31 0.5Y
Dec 01, 2025 DIST-A 4 4 0.37 0.5Y
Nov 01, 2025 DIST-A 4 4 0.46 0.5Y
Oct 01, 2025 DIST-A 4 4 0.44 0.5Y
Sep 01, 2025 DIST-A 4 4 0.59 0.5Y
Aug 01, 2025 DIST-A 4 4 0.57 0.4Y
Jul 01, 2025 DIST-A 4 4 0.53 0.4Y
Jun 01, 2025 DIST-A 4 4 0.39 0.4Y
May 01, 2025 DIST-A 4 4 0.44 0.4Y
Apr 01, 2025 DIST-A 4 4 0.53 0.4Y
Mar 01, 2025 DIST-A 4 4 0.42 0.4Y
Feb 01, 2025 DIST-A 4 4 0.38 0.4Y
Jan 01, 2025 DIST-A 4 4 0.35 0.4Y
Dec 01, 2024 DIST-A 4 4 0.46 0.4Y
Nov 01, 2024 DIST-A 4 4 0.43 0.4Y
Oct 01, 2024 DIST-A 4 4 0.39 0.4Y
Sep 01, 2024 DIST-A 4 4 0.43 0.4Y
Aug 01, 2024 DIST-A 4 4 0.28 0.4Y
Jul 01, 2024 DIST-A 4 4 0.52 0.4Y
Jun 01, 2024 DIST-A 4 4 0.41 0.4Y
May 01, 2024 DIST-A 4 4 0.29 0.4Y
Apr 01, 2024 DIST-A 4 4 0.41 0.4Y
Mar 01, 2024 DIST-A 4 4 0.44 0.4Y
Feb 01, 2024 DIST-A 4 4 0.37 0.4Y
Jan 01, 2024 DIST-A 4 4 0.2 0.4Y
Dec 01, 2023 DIST-A 4 4 0.43 0.5Y
Nov 01, 2023 DIST-A 4 4 0.39 0.4Y
Oct 01, 2023 DIST-A 4 4 0.31 0.4Y
Sep 01, 2023 DIST-A 4 4 0.36 0.5Y
Aug 01, 2023 DIST-A 4 4 0.55 0.5Y
Jul 01, 2023 DIST-A 4 4 0.63 0.5Y
Jun 01, 2023 DIST-A 4 4 0.67 0.5Y
May 01, 2023 DIST-A 4 4 0.37 0.4Y
Apr 01, 2023 DIST-A 4 4 0.38 0.4Y
Dec 01, 2022 DIST-A 4 4 0.31 0.5Y
Nov 01, 2022 DIST-A 4 4 0.39 0.5Y
Oct 01, 2022 DIST-A 4 4 0.45 0.5Y
Sep 01, 2022 DIST-A 4 4 0.52 0.5Y
Aug 01, 2022 DIST-A 4 4 0.63 0.5Y
Jul 01, 2022 DIST-A 4 4 0.4 0.5Y
Jun 01, 2022 DIST-A 4 4 0.45 0.5Y
May 01, 2022 DIST-A 4 4 0.49 0.6Y
Apr 01, 2022 DIST-A 4 4 0.47 0.6Y
Mar 01, 2022 DIST-A 4 4 0.5 0.6Y
Feb 01, 2022 DIST-A 4 4 0.49 0.6Y
Jan 01, 2022 DIST-A 4 4 0.42 0.6Y
Dec 01, 2021 DIST-A 4 4 0.59 0.7Y
Nov 01, 2021 DIST-A 4 4 0.5 0.7Y
Oct 01, 2021 DIST-A 4 4 0.45 0.7Y
Sep 01, 2021 DIST-A 4 4 0.58 0.7Y
Aug 01, 2021 DIST-A 4 4 0.77 0.7Y
Jul 01, 2021 DIST-A 4 4 0.59 0.7Y
Jun 01, 2021 DIST-A 4 4 0.89 0.7Y
May 01, 2021 DIST-A 4 4 0.46 0.7Y
Apr 01, 2021 DIST-A 4 4 0.9 0.8Y
Mar 01, 2021 DIST-A 4 4 0.78 0.8Y
Feb 01, 2021 DIST-A 4 4 0.68 0.8Y
Jan 01, 2021 DIST-A 4 4 0.71 0.8Y
Dec 01, 2020 DIST-A 4 4 1.14 0.8Y
Nov 01, 2020 DIST-A 4 4 0.56 0.8Y
Oct 01, 2020 DIST-A 4 4 0.51 0.8Y
Sep 01, 2020 DIST-A 4 4 0.62 0.8Y
Aug 01, 2020 DIST-A 4 4 0.87 0.8Y
Jul 01, 2020 DIST-A 4 4 0.84 0.8Y
Jun 01, 2020 DIST-A 4 4 0.81 0.8Y
May 01, 2020 DIST-A 4 4 0.79 0.8Y
Apr 01, 2020 DIST-A 4 4 0.78 0.8Y
Mar 01, 2020 DIST-A 4 4 0.95 0.8Y
Feb 01, 2020 DIST-A 4 4 0.8 0.8Y
Jan 01, 2020 DIST-A 4 4 0.8 0.8Y
Dec 01, 2019 DIST-A 4 4 0.77 0.8Y
Nov 01, 2019 DIST-A 4 4 0.65 0.8Y
Oct 01, 2019 DIST-A 4 4 0.65 0.8Y
Sep 01, 2019 DIST-A 4 4 0.72 0.8Y
Aug 01, 2019 DIST-A 4 4 0.98 0.8Y
Jul 01, 2019 DIST-A 4 4 0.86 0.8Y
Jun 01, 2019 DIST-A 4 4 0.92 0.8Y
May 01, 2019 DIST-A 4 4 0.79 0.8Y
Apr 01, 2019 DIST-A 4 4 0.73 0.8Y
Mar 01, 2019 DIST-A 4 4 0.87 0.8Y
Feb 01, 2019 DIST-A 4 4 0.83 0.8Y
Jan 01, 2019 DIST-A 4 4 0.87 0.8Y
Dec 01, 2018 DIST-A 4 4 0.93 0.8Y
Nov 01, 2018 DIST-A 4 4 0.84 0.8Y
Oct 01, 2018 DIST-A 4 4 0.8 0.8Y
Sep 01, 2018 DIST-A 4 4 0.72 0.8Y
Aug 01, 2018 DIST-A 4 4 0.98 0.8Y
Jul 01, 2018 DIST-A 4 4 0.86 0.7Y
Jun 01, 2018 DIST-A 4 4 0.77 0.7Y
May 01, 2018 DIST-A 4 4 0.75 0.7Y
Apr 01, 2018 DIST-A 4 4 0.7 0.7Y
Mar 01, 2018 DIST-A 4 4 0.76 0.7Y
Feb 01, 2018 DIST-A 4 4 0.66 0.7Y
Jan 01, 2018 DIST-A 4 4 0.73 0.7Y
Dec 01, 2017 DIST-A 4 4 0.79 0.7Y
Nov 01, 2017 DIST-A 4 4 0.64 0.7Y
Oct 01, 2017 DIST-A 4 4 0.77 0.7Y
Sep 01, 2017 DIST-A 4 4 0.62 0.7Y
Aug 01, 2017 DIST-A 4 4 0.71 0.7Y
Jul 01, 2017 DIST-A 4 4 0.82 0.7Y
Jun 01, 2017 DIST-A 4 4 0.56 0.7Y
May 01, 2017 DIST-A 4 4 0.91 0.7Y
Apr 01, 2017 DIST-A 4 4 0.72 0.7Y
Mar 01, 2017 DIST-A 4 4 0.53 0.7Y
Feb 01, 2017 DIST-A 4 4 0.64 0.7Y
Jan 01, 2017 DIST-A 4 4 0.73 0.7Y
Dec 01, 2016 DIST-A 4 4 0.84 0.7Y
Nov 01, 2016 DIST-A 4 4 0.69 0.7Y
Oct 01, 2016 DIST-A 4 4 0.54 0.7Y
Sep 01, 2016 DIST-A 4 4 0.75 0.7Y
Aug 01, 2016 DIST-A 4 4 0.74 0.7Y
Jul 01, 2016 DIST-A 4 4 0.83 0.7Y
Jun 01, 2016 DIST-A 4 4 0.84 0.7Y
May 01, 2016 DIST-A 4 4 0.73 0.7Y
Apr 01, 2016 DIST-A 4 4 0.67 0.7Y
Mar 01, 2016 DIST-A 4 4 0.7 0.7Y
Feb 01, 2016 DIST-A 4 4 0.69 0.7Y
Jan 01, 2016 DIST-A 4 4 0.71 0.7Y
Dec 01, 2015 DIST-A 4 4 0.94 0.6Y
Nov 01, 2015 DIST-A 4 4 0.66 0.6Y
Oct 01, 2015 DIST-A 4 4 0.5 0.6Y
Sep 01, 2015 DIST-A 4 4 0.71 0.6Y
Aug 01, 2015 DIST-A 4 4 0.73 0.6Y
Jul 01, 2015 DIST-A 4 4 0.86 0.6Y
Jun 01, 2015 DIST-A 4 4 0.43 0.6Y
May 01, 2015 DIST-A 4 4 0.58 0.6Y
Apr 01, 2015 DIST-A 4 4 0.61 0.6Y
Mar 01, 2015 DIST-A 4 4 0.57 0.6Y
Feb 01, 2015 DIST-A 4 4 0.6 0.6Y
Jan 01, 2015 DIST-A 4 4 0.53 0.6Y
Dec 01, 2014 DIST-A 4 4 0.52 0.6Y
Nov 01, 2014 DIST-A 4 4 0.55 0.6Y
Oct 01, 2014 DIST-A 4 4 0.56 0.6Y
Sep 01, 2014 DIST-A 4 4 0.63 0.6Y
Aug 01, 2014 DIST-A 4 4 0.61 0.6Y
Jul 01, 2014 DIST-A 4 4 0.56 0.6Y
Jun 01, 2014 DIST-A 4 4 0.45 0.6Y
May 01, 2014 DIST-A 4 4 0.6 0.6Y
Apr 01, 2014 DIST-A 4 4 0.53 0.6Y
Mar 01, 2014 DIST-A 4 5 0.68 0.6Y
Feb 01, 2014 DIST-A 4 5 0.81 0.6Y
Jan 01, 2014 DIST-A 4 5 0.68 0.6Y
Dec 01, 2013 DIST-A 4 5 0.7 0.6Y
Nov 01, 2013 DIST-A 4 5 0.72 0.6Y
Oct 01, 2013 DIST-A 4 5 0.55 0.6Y
Sep 01, 2013 DIST-A 4 5 0.5 0.6Y
Aug 01, 2013 DIST-A 4 5 0.73 0.6Y
Jul 01, 2013 DIST-A 4 5 0.73 0.6Y
Jun 01, 2013 DIST-A 4 5 0.54 0.6Y
May 01, 2013 DIST-A 4 5 0.55 0.6Y
Apr 01, 2013 DIST-A 4 5 0.57 0.6Y
Mar 01, 2013 DIST-A 4 5 0.64 0.6Y
Feb 01, 2013 DIST-A 4 5 0.52 0.6Y
Jan 01, 2013 DIST-A 4 5 0.59 0.6Y
Dec 01, 2012 DIST-A 4 5 0.51 0.6Y
Nov 01, 2012 DIST-A 5 5 0.7 0.7Y
Oct 01, 2012 DIST-A 8 0 0.5Y
Sep 01, 2012 DIST-A 7 0 0.6Y
Aug 01, 2012 DIST-A 4 0 0.6Y
Jul 01, 2012 DIST-A 4 0 0.6Y
Jun 01, 2012 DIST-A 4 0 0.5Y
May 01, 2012 DIST-A 4 0 0.5Y
Apr 01, 2012 DIST-A 4 0 0.5Y
Mar 01, 2012 DIST-A 4 0 0.4Y
Feb 01, 2012 DIST-A 4 0 0.4Y
Jan 01, 2012 DIST-A 4 5 0.61 0.4Y
Dec 01, 2011 DIST-A 4 5 0.84 0.4Y
Nov 01, 2011 DIST-A 4 5 0.11 0.4Y
Oct 01, 2011 DIST-A 4 5 0.93 0.4Y
Sep 01, 2011 DIST-A 4 5 0.58 0.4Y
Aug 01, 2011 DIST-A 4 5 0.39 0.3Y
Jul 01, 2011 DIST-A 4 5 0.24 0.4Y
Jun 01, 2011 DIST-A 4 5 0.25 0.4Y
May 01, 2011 DIST-A 4 5 0.26 0.4Y
Apr 01, 2011 DIST-A 4 5 0.19 0.4Y
Mar 01, 2011 DIST-A 5 5 0.19 0.4Y
Feb 01, 2011 DIST-A 7 3 0.4 0.5Y
Jan 01, 2011 DIST-A 4 5 0.33 0.5Y
Dec 01, 2010 DIST-A 4 2 0.61 0.5Y
Nov 01, 2010 DIST-A 4 5 0.21 0.5Y
Oct 01, 2010 DIST-A 4 5 0.63 0.5Y
Sep 01, 2010 DIST-A 4 0 0.5Y
Aug 01, 2010 DIST-A 4 5 0.54 0.5Y
Jul 01, 2010 DIST-A 4 0 0.6Y
Jun 01, 2010 DIST-A 4 2 0.66 0.6Y
May 01, 2010 DIST-A 4 5 0.28 0.6Y
Apr 01, 2010 DIST-A 4 0 0.6Y
Mar 01, 2010 DIST-A 4 2 0.8 0.6Y
Feb 01, 2010 DIST-A 4 0 0.6Y
Jan 01, 2010 DIST-A 4 5 0.33 0.6Y
Dec 01, 2009 DIST-A 4 0 0.7Y
Nov 01, 2009 DIST-A 4 0 0.7Y
Oct 01, 2009 DIST-A 4 0 0.7Y
Sep 01, 2009 DIST-A 4 0 0.7Y
Aug 01, 2009 DIST-A 4 1 0.7 0.7Y
Jul 01, 2009 DIST-A 4 1 0.66 0.7Y
Jun 01, 2009 DIST-A 4 1 0.59 0.7Y
May 01, 2009 DIST-A 4 1 0.71 0.7Y
Apr 01, 2009 DIST-A 4 1 0.56 0.7Y
Mar 01, 2009 DIST-A 4 4 0.55 0.7Y
Feb 01, 2009 DIST-A 4 1 0.9 0.7Y
Jan 01, 2009 DIST-A 4 4 0.83 0.7Y
Dec 01, 2008 DIST-A 4 1 0.79 0.7Y
Nov 01, 2008 DIST-A 4 0 0.6Y
Oct 01, 2008 DIST-A 4 4 0.6 0.6Y
Sep 01, 2008 DIST-A 4 0 0.6Y
Aug 01, 2008 DIST-A 4 4 0.8 0.6Y
Jul 01, 2008 DIST-A 4 0 0.6Y
Jun 01, 2008 DIST-A 4 4 0.42 0.6Y
May 01, 2008 DIST-A 4 4 0.66 0.6Y
Apr 01, 2008 DIST-A 4 1 0.79 0.6Y
Mar 01, 2008 DIST-A 4 0 0.6Y
Feb 01, 2008 DIST-A 4 4 0.62 0.6Y
Jan 01, 2008 DIST-A 4 4 0.55 0.6Y
Dec 01, 2007 DIST-A 4 4 0.67 0.6Y
Nov 01, 2007 DIST-A 4 4 0.63 0.6Y
Oct 01, 2007 DIST-A 4 1 0.59 0.6Y
Sep 01, 2007 DIST-A 4 1 0.48 0.6Y
Aug 01, 2007 DIST-A 4 1 0.6 0.6Y
Jul 01, 2007 DIST-A 4 1 0.47 0.6Y
Jun 01, 2007 DIST-A 4 1 0.65 0.6Y
May 01, 2007 DIST-A 4 1 0.56 0.6Y
Apr 01, 2007 DIST-A 4 1 0.72 0.6Y
Mar 01, 2007 DIST-A 4 1 0.69 0.6Y
Feb 01, 2007 DIST-A 4 1 0.88 0.6Y
Jan 01, 2007 DIST-A 4 1 0.58 0.6Y
Dec 01, 2006 DIST-A 4 1 0.57 0.6Y
Nov 01, 2006 DIST-A 4 4 0.63 0.7Y
Oct 01, 2006 DIST-A 4 0 0.7Y
Sep 01, 2006 DIST-A 4 4 0.74 0.7Y
Aug 01, 2006 DIST-A 4 4 0.48 0.7Y
Jul 01, 2006 DIST-A 4 4 0.63 0.7Y
Jun 01, 2006 DIST-A 4 0 0.7Y
May 01, 2006 DIST-A 4 4 0.55 0.7Y
Apr 01, 2006 DIST-A 4 0 0.7Y
Mar 01, 2006 DIST-A 4 4 0.64 0.7Y
Feb 01, 2006 DIST-A 4 4 0.88 0.7Y
Jan 01, 2006 DIST-A 4 4 0.64 0.7Y
Dec 01, 2005 DIST-A 4 4 0.78 0.7Y
Nov 01, 2005 DIST-A 4 0 0.7Y
Oct 01, 2005 DIST-A 4 4 0.6 0.7Y
Sep 01, 2005 DIST-A 4 4 0.75 0.7Y
Aug 01, 2005 DIST-A 4 4 0.8 0.7Y
Jul 01, 2005 DIST-A 4 4 0.73 0.7Y
Jun 01, 2005 DIST-A 4 4 0.75 0.7Y
May 01, 2005 DIST-A 4 0 0.7Y
Apr 01, 2005 DIST-A 4 4 0.66 0.7Y
Mar 01, 2005 DIST-A 4 0 0.8Y
Feb 01, 2005 DIST-A 4 4 0.59 0.8Y
Jan 01, 2005 DIST-A 4 4 0.82 0.8Y
Dec 01, 2004 DIST-A 4 4 0.75 0.8Y
Nov 01, 2004 DIST-A 4 4 0.83 0.8Y
Oct 01, 2004 DIST-A 4 4 0.75 0.8Y
Sep 01, 2004 DIST-A 4 0 0.8Y