OHA Drinking Water Services
OR41
PWS ID: 00357 ---- GRESHAM, 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
Jun 01, 2025 DIST-A 80 80 1.66 1.8Y
May 01, 2025 DIST-A 80 80 1.7 1.8Y
Apr 01, 2025 DIST-A 80 80 1.8 1.8Y
Mar 01, 2025 DIST-A 80 80 1.78 1.7Y
Feb 01, 2025 DIST-A 80 80 1.72 1.7Y
Jan 01, 2025 DIST-A 80 80 1.78 1.7Y
Dec 01, 2024 DIST-A 80 80 1.7 1.7Y
Nov 01, 2024 DIST-A 80 80 1.81 1.7Y
Oct 01, 2024 DIST-A 80 80 1.7 1.7Y
Sep 01, 2024 DIST-A 80 80 1.8 1.6Y
Aug 01, 2024 DIST-A 80 80 1.79 1.6Y
Jul 01, 2024 DIST-A 80 80 1.83 1.6Y
Jun 01, 2024 DIST-A 80 80 1.69 1.6Y
May 01, 2024 DIST-A 80 80 1.66 1.6Y
Apr 01, 2024 DIST-A 80 80 1.67 1.6Y
Mar 01, 2024 DIST-A 80 80 1.47 1.6Y
Feb 01, 2024 DIST-A 80 80 1.53 1.6Y
Jan 01, 2024 DIST-A 80 80 1.65 1.6Y
Dec 01, 2023 DIST-A 80 80 1.5 1.6Y
Nov 01, 2023 DIST-A 80 80 1.6 1.6Y
Oct 01, 2023 DIST-A 80 80 1.5 1.6Y
Sep 01, 2023 DIST-A 80 80 1.56 1.6Y
Aug 01, 2023 DIST-A 80 80 1.52 1.6Y
Jul 01, 2023 DIST-A 80 80 1.6 1.6Y
Jun 01, 2023 DIST-A 80 80 1.67 1.6Y
May 01, 2023 DIST-A 80 80 1.48 1.6Y
Apr 01, 2023 DIST-A 80 80 1.61 1.6Y
Mar 01, 2023 DIST-A 80 80 1.5 1.6Y
Feb 01, 2023 DIST-A 80 80 1.5 1.6Y
Jan 01, 2023 DIST-A 80 80 1.66 1.6Y
Dec 01, 2022 DIST-A 80 80 1.8 1.5Y
Nov 01, 2022 DIST-A 80 80 1.5 1.5Y
Oct 01, 2022 DIST-A 80 80 1.82 1.5Y
Sep 01, 2022 DIST-A 80 80 1.8 1.4Y
Aug 01, 2022 DIST-A 80 80 1.6 1.4Y
Jul 01, 2022 DIST-A 80 80 1.56 1.4Y
Jun 01, 2022 DIST-A 80 80 1.34 1.4Y
May 01, 2022 DIST-A 80 80 1.4 1.4Y
Apr 01, 2022 DIST-A 80 80 1.44 1.4Y
Mar 01, 2022 DIST-A 80 80 1.5 1.4Y
Feb 01, 2022 DIST-A 80 80 1.3 1.4Y
Jan 01, 2022 DIST-A 80 80 1.30 1.4Y
Dec 01, 2021 DIST-A 80 80 1.23 1.4Y
Nov 01, 2021 DIST-A 80 80 1.1 1.4Y
Oct 01, 2021 DIST-A 80 80 1.23 1.4Y
Sep 01, 2021 DIST-A 80 80 1.6 1.5Y
Aug 01, 2021 DIST-A 80 80 1.46 1.5Y
Jul 01, 2021 DIST-A 80 80 1.45 1.4Y
Jun 01, 2021 DIST-A 80 80 1.4 1.4Y
May 01, 2021 DIST-A 80 80 1.55 1.4Y
Apr 01, 2021 DIST-A 80 80 1.51 1.4Y
Mar 01, 2021 DIST-A 80 80 1.50 1.4Y
Feb 01, 2021 DIST-A 80 80 1.47 1.4Y
Jan 01, 2021 DIST-A 80 80 1.43 1.4Y
Dec 01, 2020 DIST-A 80 80 1.24 1.4Y
Nov 01, 2020 DIST-A 80 80 1.54 1.4Y
Oct 01, 2020 DIST-A 80 80 1.40 1.3Y
Sep 01, 2020 DIST-A 80 80 1.51 1.3Y
Aug 01, 2020 DIST-A 80 80 1.37 1.3Y
Jul 01, 2020 DIST-A 80 80 1.41 1.3Y
Jun 01, 2020 DIST-A 80 80 1.33 1.3Y
May 01, 2020 DIST-A 80 80 1.29 1.3Y
Apr 01, 2020 DIST-A 80 80 1.29 1.3Y
Mar 01, 2020 DIST-A 80 80 1.25 1.3Y
Feb 01, 2020 DIST-A 80 80 1.20 1.4Y
Jan 01, 2020 DIST-A 80 80 1.44 1.4Y
Dec 01, 2019 DIST-A 80 80 1.29 1.4Y
Nov 01, 2019 DIST-A 80 80 1.30 1.4Y
Oct 01, 2019 DIST-A 80 80 1.1 1.4Y
Sep 01, 2019 DIST-A 80 100 1.30 1.4Y
Aug 01, 2019 DIST-A 80 80 1.4 1.4Y
Jul 01, 2019 DIST-A 80 80 1.33 1.4Y
Jun 01, 2019 DIST-A 80 80 1.45 1.4Y
May 01, 2019 DIST-A 80 80 1.5 1.4Y
Apr 01, 2019 DIST-A 80 80 1.35 1.4Y
Mar 01, 2019 DIST-A 80 80 1.55 1.3Y
Feb 01, 2019 DIST-A 80 80 1.4 1.3Y
Jan 01, 2019 DIST-A 80 80 1.47 1.3Y
Dec 01, 2018 DIST-A 80 80 1.25 1.3Y
Nov 01, 2018 DIST-A 80 80 1.18 1.3Y
Oct 01, 2018 DIST-A 80 80 1.16 1.3Y
Sep 01, 2018 DIST-A 80 80 1.4 1.3Y
Aug 01, 2018 DIST-A 80 80 1.4 1.3Y
Jul 01, 2018 DIST-A 80 80 1.35 1.3Y
Jun 01, 2018 DIST-A 80 80 1.42 1.3Y
May 01, 2018 DIST-A 80 80 1.3 1.3Y
Apr 01, 2018 DIST-A 80 80 1.3 1.3Y
Mar 01, 2018 DIST-A 80 80 1.3 1.3Y
Feb 01, 2018 DIST-A 80 80 1.26 1.3Y
Jan 01, 2018 DIST-A 80 80 1.3 1.3Y
Dec 01, 2017 DIST-A 80 80 1.25 1.3Y
Nov 01, 2017 DIST-A 80 80 1.10 1.3Y
Oct 01, 2017 DIST-A 80 80 0.97 1.3Y
Sep 01, 2017 DIST-A 80 80 1.33 1.3Y
Aug 01, 2017 DIST-A 80 80 1.5 1.3Y
Jul 01, 2017 DIST-A 80 80 1.5 1.3Y
Jun 01, 2017 DIST-A 80 80 1.3 1.2Y
May 01, 2017 DIST-A 80 80 1.3 1.3Y
Apr 01, 2017 DIST-A 80 80 1.32 1.3Y
Mar 01, 2017 DIST-A 80 80 1.38 1.3Y
Feb 01, 2017 DIST-A 80 80 1.45 1.3Y
Jan 01, 2017 DIST-A 80 80 1.48 1.3Y
Dec 01, 2016 DIST-A 80 80 1 1.3Y
Nov 01, 2016 DIST-A 83 83 0.88 1.3Y
Oct 01, 2016 DIST-A 80 80 1.12 1.4Y
Sep 01, 2016 DIST-A 80 80 1.2 1.4Y
Aug 01, 2016 DIST-A 80 80 1.22 1.3Y
Jul 01, 2016 DIST-A 80 80 1.29 1.4Y
Jun 01, 2016 DIST-A 80 80 1.48 1.4Y
May 01, 2016 DIST-A 80 80 1.50 1.4Y
Apr 01, 2016 DIST-A 80 80 1.5 1.4Y
Mar 01, 2016 DIST-A 70 70 1.58 1.4Y
Feb 01, 2016 DIST-A 70 70 1.57 1.4Y
Jan 01, 2016 DIST-A 70 70 1.63 1.4Y
Dec 01, 2015 DIST-A 70 70 1.2 1.4Y
Nov 01, 2015 DIST-A 70 70 1.17 1.4Y
Oct 01, 2015 DIST-A 70 70 1 1.4Y
Sep 01, 2015 DIST-A 70 70 1.04 1.4Y
Aug 01, 2015 DIST-A 70 70 1.5 1.4Y
Jul 01, 2015 DIST-A 70 70 1.48 1.5Y
Jun 01, 2015 DIST-A 70 70 1.67 1.5Y
May 01, 2015 DIST-A 70 70 1.36 1.5Y
Apr 01, 2015 DIST-A 70 70 1.5 1.5Y
Mar 01, 2015 DIST-A 70 70 1.40 1.5Y
Feb 01, 2015 DIST-A 70 70 1.51 1.5Y
Jan 01, 2015 DIST-A 70 70 1.5 1.5Y
Dec 01, 2014 DIST-A 70 70 1.58 1.5Y
Nov 01, 2014 DIST-A 70 70 1.5 1.6Y
Oct 01, 2014 DIST-A 73 73 1 1.6Y
Sep 01, 2014 DIST-A 70 70 1.37 1.6Y
Aug 01, 2014 DIST-A 70 70 1.6 1.6Y
Jul 01, 2014 DIST-A 70 70 1.76 1.6Y
Jun 01, 2014 DIST-A 70 70 1.62 1.5Y
May 01, 2014 DIST-A 70 70 1.54 1.5Y
Apr 01, 2014 DIST-A 70 70 1.6 1.5Y
Mar 01, 2014 DIST-A 70 70 1.6 1.5Y
Feb 01, 2014 DIST-A 70 70 1.7 1.5Y
Jan 01, 2014 DIST-A 70 70 1.72 1.4Y
Dec 01, 2013 DIST-A 70 70 1.69 1.3Y
Nov 01, 2013 DIST-A 70 70 1.96 1.3Y
Oct 01, 2013 DIST-A 70 70 1.50 1.2Y
Sep 01, 2013 DIST-A 70 70 1.08 1.2Y
Aug 01, 2013 DIST-A 70 70 1.25 1.2Y
Jul 01, 2013 DIST-A 73 73 1.2 1.1Y
Jun 01, 2013 DIST-A 70 70 1.27 1.2Y
May 01, 2013 DIST-A 70 70 1.34 1.1Y
Apr 01, 2013 DIST-A 70 70 1.4 1.1Y
Mar 01, 2013 DIST-A 70 70 1.32 1.1Y
Feb 01, 2013 DIST-A 70 70 1 1.1Y
Jan 01, 2013 DIST-A 70 70 1.14 1.2Y
Dec 01, 2012 DIST-A 70 70 1.02 1.1Y
Nov 01, 2012 DIST-A 70 70 0.95 1.1Y
Oct 01, 2012 DIST-A 70 70 0.89 1.1Y
Sep 01, 2012 DIST-A 70 70 1.11 1.2Y
Aug 01, 2012 DIST-A 70 70 1.11 1.2Y
Jul 01, 2012 DIST-A 70 70 1.25 1.2Y
Jun 01, 2012 DIST-A 70 70 1.2 1.2Y
May 01, 2012 DIST-A 70 70 1.3 1.2Y
Apr 01, 2012 DIST-A 70 70 1.29 1.2Y
Mar 01, 2012 DIST-A 70 70 1.31 1.2Y
Feb 01, 2012 DIST-A 70 70 1.24 1.2Y
Jan 01, 2012 DIST-A 70 70 1.06 1.2Y
Dec 01, 2011 DIST-A 70 70 1.06 1.2Y
Nov 01, 2011 DIST-A 70 70 0.88 1.2Y
Oct 01, 2011 DIST-A 70 70 1.00 1.3Y
Sep 01, 2011 DIST-A 70 70 1.18 1.3Y
Aug 01, 2011 DIST-A 70 70 1.22 1.2Y
Jul 01, 2011 DIST-A 70 70 1.44 1.2Y
Jun 01, 2011 DIST-A 70 70 1.25 1.2Y
May 01, 2011 DIST-A 70 70 1.45 1.2Y
Apr 01, 2011 DIST-A 70 70 1.40 1.2Y
Mar 01, 2011 DIST-A 70 70 1.36 1.2Y
Feb 01, 2011 DIST-A 70 70 1.27 1.2Y
Jan 01, 2011 DIST-A 70 70 1.27 1.2Y
Dec 01, 2010 DIST-A 70 70 1.21 1.2Y
Nov 01, 2010 DIST-A 70 70 1.06 1.2Y
Oct 01, 2010 DIST-A 70 70 0.96 1.2Y
Sep 01, 2010 DIST-A 70 70 1.10 1.2Y
Aug 01, 2010 DIST-A 70 70 0.90 1.2Y
Jul 01, 2010 DIST-A 70 70 1.19 1.2Y
Jun 01, 2010 DIST-A 70 70 1.29 1.2Y
May 01, 2010 DIST-A 70 70 1.24 1.2Y
Apr 01, 2010 DIST-A 70 70 1.27 1.2Y
Mar 01, 2010 DIST-A 70 70 1.41 1.2Y
Feb 01, 2010 DIST-A 70 70 1.37 1.2Y
Jan 01, 2010 DIST-A 70 70 1.37 1.2Y
Dec 01, 2009 DIST-A 70 70 1.22 1.2Y
Nov 01, 2009 DIST-A 70 70 1.20 1.2Y
Oct 01, 2009 DIST-A 70 70 0.86 1.2Y
Sep 01, 2009 DIST-A 70 70 1.02 1.2Y
Aug 01, 2009 DIST-A 70 70 1.02 1.2Y
Jul 01, 2009 DIST-A 70 70 1.18 1.2Y
Jun 01, 2009 DIST-A 70 70 1.37 1.2Y
May 01, 2009 DIST-A 70 70 1.4010 1.2Y
Apr 01, 2009 DIST-A 70 70 1.43 1.2Y
Mar 01, 2009 DIST-A 70 70 1.3 1.2Y
Feb 01, 2009 DIST-A 70 70 1.31 1.2Y
Jan 01, 2009 DIST-A 70 70 0.8 1.2Y
Dec 01, 2008 DIST-A 70 70 1.14 1.3Y
Nov 01, 2008 DIST-A 70 70 1.10 1.3Y
Oct 01, 2008 DIST-A 70 70 0.95 1.3Y
Sep 01, 2008 DIST-A 70 70 1.04 1.3Y
Aug 01, 2008 DIST-A 70 70 1.12 1.3Y
Jul 01, 2008 DIST-A 70 70 1.39 1.3Y
Jun 01, 2008 DIST-A 70 70 1.45 1.3Y
May 01, 2008 DIST-A 70 70 1.39 1.3Y
Apr 01, 2008 DIST-A 70 70 1.52 1.3Y
Mar 01, 2008 DIST-A 70 70 1.49 1.3Y
Feb 01, 2008 DIST-A 70 70 1.40 1.3Y
Jan 01, 2008 DIST-A 70 70 1.39 1.3Y
Dec 01, 2007 DIST-A 70 70 1.12 1.3Y
Nov 01, 2007 DIST-A 70 70 1.23 1.4Y
Oct 01, 2007 DIST-A 70 70 1.06 1.4Y
Sep 01, 2007 DIST-A 70 70 1.20 1.4Y
Aug 01, 2007 DIST-A 70 70 1.13 1.4Y
Jul 01, 2007 DIST-A 70 70 1.21 1.4Y
Jun 01, 2007 DIST-A 70 70 1.34 1.5Y
May 01, 2007 DIST-A 70 70 1.59 1.5Y
Apr 01, 2007 DIST-A 0 70 1.59 1.5Y
Mar 01, 2007 DIST-A 0 70 1.59 1.4Y
Feb 01, 2007 DIST-A 70 70 1.51 1.4Y
Jan 01, 2007 DIST-A 70 70 1.50 1.4Y
Dec 01, 2006 DIST-A 70 70 1.39 1.4Y
Nov 01, 2006 DIST-A 70 70 1.16 1.4Y
Oct 01, 2006 DIST-A 70 70 1.46 1.4Y
Sep 01, 2006 DIST-A 70 70 1.36 1.3Y
Aug 01, 2006 DIST-A 70 70 1.52 1.4Y
Jul 01, 2006 DIST-A 70 70 1.51 1.4Y
Jun 01, 2006 DIST-A 70 70 1.45 1.4Y
May 01, 2006 DIST-A 70 70 1.44 1.5Y
Apr 01, 2006 DIST-A 70 70 1.23 1.5Y
Mar 01, 2006 DIST-A 70 70 1.28 1.5Y
Feb 01, 2006 DIST-A 70 70 1.27 1.5Y
Jan 01, 2006 DIST-A 70 70 1.31 1.5Y
Dec 01, 2005 DIST-A 70 70 1.34 1.5Y
Nov 01, 2005 DIST-A 70 70 1.19 1.5Y
Oct 01, 2005 DIST-A 70 70 1.17 1.5Y
Sep 01, 2005 DIST-A 70 69 2 1.5Y
Aug 01, 2005 DIST-A 70 70 2 1.4Y
Jul 01, 2005 DIST-A 70 69 1.7 1.4Y
Jun 01, 2005 DIST-A 70 70 1.48 1.3Y
May 01, 2005 DIST-A 70 70 1.50 1.3Y
Apr 01, 2005 DIST-A 70 70 1.51 1.3Y
Mar 01, 2005 DIST-A 70 70 1.32 1.3Y
Feb 01, 2005 DIST-A 50 70 1.32 1.3Y
Jan 01, 2005 DIST-A 50 70 1.35 1.3Y
Dec 01, 2004 DIST-A 50 70 1.24 1.3Y
Nov 01, 2004 DIST-A 50 70 1.15 1.3Y
Oct 01, 2004 DIST-A 50 70 1.00 1.3Y
Sep 01, 2004 DIST-A 50 70 1.18 1.4Y
 



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