OHA Drinking Water Services
OR41
PWS ID: 00372 ---- HERMISTON, 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 20 20 0.57 0.5Y
May 01, 2025 DIST-A 20 20 0.6 0.5Y
Apr 01, 2025 DIST-A 20 20 0.61 0.5Y
Mar 01, 2025 DIST-A 20 20 0.62 0.5Y
Feb 01, 2025 DIST-A 20 20 0.7 0.5Y
Jan 01, 2025 DIST-A 20 20 0.68 0.5Y
Dec 01, 2024 DIST-A 20 20 0.43 0.5Y
Nov 01, 2024 DIST-A 23 23 0.5 0.5Y
Oct 01, 2024 DIST-A 20 20 0.5 0.5Y
Sep 01, 2024 DIST-A 20 20 0.38 0.5Y
Aug 01, 2024 DIST-A 20 20 0.48 0.5Y
Jul 01, 2024 DIST-A 20 20 0.50 0.5Y
Jun 01, 2024 DIST-A 20 20 0.5 0.5Y
May 01, 2024 DIST-A 20 20 0.44 0.5Y
Apr 01, 2024 DIST-A 20 20 0.57 0.4Y
Mar 01, 2024 DIST-A 23 23 0.57 0.4Y
Feb 01, 2024 DIST-A 20 20 0.49 0.4Y
Jan 01, 2024 DIST-A 20 20 0.63 0.4Y
Dec 01, 2023 DIST-A 20 20 0.55 0.4Y
Nov 01, 2023 DIST-A 20 20 0.4 0.3Y
Oct 01, 2023 DIST-A 20 20 0.3 0.3Y
Sep 01, 2023 DIST-A 20 20 0.33 0.4Y
Aug 01, 2023 DIST-A 20 20 0.41 0.4Y
Jul 01, 2023 DIST-A 20 20 0.43 0.3Y
Jun 01, 2023 DIST-A 20 20 0.35 0.3Y
May 01, 2023 DIST-A 20 20 0.3 0.3Y
Apr 01, 2023 DIST-A 20 20 0.4 0.3Y
Mar 01, 2023 DIST-A 20 20 0.32 0.3Y
Feb 01, 2023 DIST-A 23 23 0.3 0.3Y
Jan 01, 2023 DIST-A 20 20 0.33 0.3Y
Dec 01, 2022 DIST-A 20 20 0.32 0.4Y
Nov 01, 2022 DIST-A 20 20 0.25 0.4Y
Oct 01, 2022 DIST-A 20 20 0.48 0.4Y
Sep 01, 2022 DIST-A 20 20 0.36 0.4Y
Aug 01, 2022 DIST-A 20 20 0.24 0.3Y
Jul 01, 2022 DIST-A 20 20 0.38 0.3Y
Jun 01, 2022 DIST-A 20 20 0.28 0.3Y
May 01, 2022 DIST-A 20 20 0.34 0.3Y
Apr 01, 2022 DIST-A 20 20 0.3 0.4Y
Mar 01, 2022 DIST-A 20 20 0.45 0.4Y
Feb 01, 2022 DIST-A 20 20 0.47 0.4Y
Jan 01, 2022 DIST-A 20 20 0.47 0.4Y
Dec 01, 2021 DIST-A 20 20 0.3 0.4Y
Nov 01, 2021 DIST-A 20 20 0.3 0.4Y
Oct 01, 2021 DIST-A 20 20 0.32 0.4Y
Sep 01, 2021 DIST-A 20 20 0.26 0.4Y
Aug 01, 2021 DIST-A 20 20 0.29 0.4Y
Jul 01, 2021 DIST-A 20 20 0.25 0.4Y
Jun 01, 2021 DIST-A 20 20 0.42 0.5Y
May 01, 2021 DIST-A 23 22 0.43 0.5Y
Apr 01, 2021 DIST-A 20 20 0.44 0.5Y
Mar 01, 2021 DIST-A 20 20 0.47 0.5Y
Feb 01, 2021 DIST-A 20 20 0.64 0.5Y
Jan 01, 2021 DIST-A 20 20 0.54 0.5Y
Dec 01, 2020 DIST-A 20 20 0.49 0.5Y
Nov 01, 2020 DIST-A 20 20 0.47 0.5Y
Oct 01, 2020 DIST-A 20 20 0.44 0.5Y
Sep 01, 2020 DIST-A 20 20 0.38 0.5Y
Aug 01, 2020 DIST-A 20 20 0.43 0.5Y
Jul 01, 2020 DIST-A 20 20 0.42 0.5Y
Jun 01, 2020 DIST-A 20 20 0.48 0.5Y
May 01, 2020 DIST-A 20 20 0.5 0.4Y
Apr 01, 2020 DIST-A 20 20 0.55 0.4Y
Mar 01, 2020 DIST-A 15 15 0.57 0.4Y
Feb 01, 2020 DIST-A 15 15 0.56 0.4Y
Jan 01, 2020 DIST-A 15 15 0.48 0.4Y
Dec 01, 2019 DIST-A 15 15 0.42 0.4Y
Nov 01, 2019 DIST-A 15 0 0.4Y
Oct 01, 2019 DIST-A 15 15 0.3 0.4Y
Sep 01, 2019 DIST-A 15 15 0.39 0.4Y
Aug 01, 2019 DIST-A 15 15 0.39 0.4Y
Jul 01, 2019 DIST-A 15 15 0.39 0.3Y
Jun 01, 2019 DIST-A 15 15 0.35 0.3Y
May 01, 2019 DIST-A 15 15 0.37 0.4Y
Apr 01, 2019 DIST-A 15 15 0.29 0.4Y
Mar 01, 2019 DIST-A 15 15 0.34 0.4Y
Feb 01, 2019 DIST-A 15 15 0.4 0.4Y
Jan 01, 2019 DIST-A 15 15 0.31 0.4Y
Dec 01, 2018 DIST-A 15 15 0.5 0.4Y
Nov 01, 2018 DIST-A 15 15 0.3 0.4Y
Oct 01, 2018 DIST-A 15 15 0.25 0.4Y
Sep 01, 2018 DIST-A 15 15 0.35 0.4Y
Aug 01, 2018 DIST-A 15 15 0.27 0.4Y
Jul 01, 2018 DIST-A 15 15 0.46 0.4Y
Jun 01, 2018 DIST-A 15 15 0.46 0.4Y
May 01, 2018 DIST-A 15 15 0.43 0.4Y
Apr 01, 2018 DIST-A 15 15 0.46 0.4Y
Mar 01, 2018 DIST-A 15 15 0.47 0.4Y
Feb 01, 2018 DIST-A 15 15 0.44 0.4Y
Jan 01, 2018 DIST-A 15 15 0.34 0.4Y
Dec 01, 2017 DIST-A 15 15 0.36 0.4Y
Nov 01, 2017 DIST-A 15 15 0.22 0.4Y
Oct 01, 2017 DIST-A 15 15 0.38 0.4Y
Sep 01, 2017 DIST-A 15 15 0.39 0.4Y
Aug 01, 2017 DIST-A 15 15 0.44 0.4Y
Jul 01, 2017 DIST-A 15 15 0.37 0.4Y
Jun 01, 2017 DIST-A 15 15 0.42 0.4Y
May 01, 2017 DIST-A 15 15 0.5 0.4Y
Apr 01, 2017 DIST-A 15 15 0.32 0.3Y
Mar 01, 2017 DIST-A 15 15 0.23 0.4Y
Feb 01, 2017 DIST-A 15 15 0.32 0.4Y
Jan 01, 2017 DIST-A 15 15 0.3 0.4Y
Dec 01, 2016 DIST-A 15 15 0.4 0.4Y
Nov 01, 2016 DIST-A 18 18 0.38 0.4Y
Oct 01, 2016 DIST-A 15 15 0.39 0.4Y
Sep 01, 2016 DIST-A 15 15 0.34 0.4Y
Aug 01, 2016 DIST-A 15 15 0.35 0.4Y
Jul 01, 2016 DIST-A 15 15 0.39 0.4Y
Jun 01, 2016 DIST-A 15 15 0.34 0.4Y
May 01, 2016 DIST-A 15 15 0.38 0.4Y
Apr 01, 2016 DIST-A 15 15 0.44 0.4Y
Mar 01, 2016 DIST-A 15 15 0.3 0.4Y
Feb 01, 2016 DIST-A 15 15 0.4 0.4Y
Jan 01, 2016 DIST-A 15 15 0.36 0.4Y
Dec 01, 2015 DIST-A 15 15 0.31 0.4Y
Nov 01, 2015 DIST-A 18 18 0.3 0.4Y
Oct 01, 2015 DIST-A 15 15 0.4 0.4Y
Sep 01, 2015 DIST-A 15 15 0.41 0.3Y
Aug 01, 2015 DIST-A 15 15 0.39 0.3Y
Jul 01, 2015 DIST-A 15 15 0.45 0.3Y
Jun 01, 2015 DIST-A 15 15 0.34 0.3Y
May 01, 2015 DIST-A 15 15 0.32 0.3Y
Apr 01, 2015 DIST-A 15 15 0.38 0.3Y
Mar 01, 2015 DIST-A 15 15 0.34 0.3Y
Feb 01, 2015 DIST-A 15 15 0.3 0.3Y
Jan 01, 2015 DIST-A 15 15 0.31 0.3Y
Dec 01, 2014 DIST-A 15 15 0.32 0.4Y
Nov 01, 2014 DIST-A 15 15 0.28 0.4Y
Oct 01, 2014 DIST-A 15 15 0.33 0.4Y
Sep 01, 2014 DIST-A 15 15 0.34 0.4Y
Aug 01, 2014 DIST-A 15 15 0.38 0.4Y
Jul 01, 2014 DIST-A 15 15 0.37 0.3Y
Jun 01, 2014 DIST-A 15 15 0.31 0.3Y
May 01, 2014 DIST-A 15 15 0.27 0.4Y
Apr 01, 2014 DIST-A 15 15 0.4 0.4Y
Mar 01, 2014 DIST-A 15 15 0.38 0.4Y
Feb 01, 2014 DIST-A 15 15 0.45 0.4Y
Jan 01, 2014 DIST-A 15 15 0.39 0.4Y
Dec 01, 2013 DIST-A 15 15 0.4 0.4Y
Nov 01, 2013 DIST-A 15 15 0.3 0.4Y
Oct 01, 2013 DIST-A 15 15 0.28 0.4Y
Sep 01, 2013 DIST-A 15 15 0.3 0.4Y
Aug 01, 2013 DIST-A 15 15 0.3 0.4Y
Jul 01, 2013 DIST-A 15 15 0.4 0.4Y
Jun 01, 2013 DIST-A 15 15 0.4 0.4Y
May 01, 2013 DIST-A 15 15 0.4 0.3Y
Apr 01, 2013 DIST-A 15 15 0.37 0.4Y
Mar 01, 2013 DIST-A 15 15 0.4 0.4Y
Feb 01, 2013 DIST-A 15 15 0.36 0.4Y
Jan 01, 2013 DIST-A 15 15 0.4 0.4Y
Dec 01, 2012 DIST-A 15 15 0.3 0.4Y
Nov 01, 2012 DIST-A 15 15 0.29 0.4Y
Oct 01, 2012 DIST-A 15 14 0.31 0.4Y
Sep 01, 2012 DIST-A 15 15 0.41 0.4Y
Aug 01, 2012 DIST-A 15 15 0.3 0.4Y
Jul 01, 2012 DIST-A 18 18 0.3 0.4Y
Jun 01, 2012 DIST-A 15 16 0.33 0.4Y
May 01, 2012 DIST-A 15 15 0.48 0.4Y
Apr 01, 2012 DIST-A 15 15 0.39 0.4Y
Mar 01, 2012 DIST-A 15 15 0.52 0.4Y
Feb 01, 2012 DIST-A 15 15 0.36 0.4Y
Jan 01, 2012 DIST-A 15 15 0.28 0.4Y
Dec 01, 2011 DIST-A 15 15 0.44 0.4Y
Nov 01, 2011 DIST-A 15 15 0.25 0.4Y
Oct 01, 2011 DIST-A 15 15 0.43 0.4Y
Sep 01, 2011 DIST-A 15 15 0.37 0.4Y
Aug 01, 2011 DIST-A 15 15 0.33 0.4Y
Jul 01, 2011 DIST-A 15 15 0.28 0.4Y
Jun 01, 2011 DIST-A 15 15 0.39 0.4Y
May 01, 2011 DIST-A 15 15 0.43 0.4Y
Apr 01, 2011 DIST-A 15 15 0.44 0.4Y
Mar 01, 2011 DIST-A 15 15 0.43 0.4Y
Feb 01, 2011 DIST-A 15 15 0.36 0.4Y
Jan 01, 2011 DIST-A 15 15 0.56 0.4Y
Dec 01, 2010 DIST-A 15 15 0.41 0.4Y
Nov 01, 2010 DIST-A 15 15 0.45 0.4Y
Oct 01, 2010 DIST-A 15 15 0.42 0.4Y
Sep 01, 2010 DIST-A 15 15 0.42 0.4Y
Aug 01, 2010 DIST-A 15 15 0.39 0.4Y
Jul 01, 2010 DIST-A 15 15 0.50 0.4Y
Jun 01, 2010 DIST-A 15 15 0.38 0.4Y
May 01, 2010 DIST-A 15 15 0.45 0.4Y
Apr 01, 2010 DIST-A 15 15 0.38 0.4Y
Mar 01, 2010 DIST-A 15 15 0.29 0.4Y
Feb 01, 2010 DIST-A 15 15 0.38 0.4Y
Jan 01, 2010 DIST-A 15 15 0.4600 0.4Y
Dec 01, 2009 DIST-A 15 15 0.45 0.4Y
Nov 01, 2009 DIST-A 15 15 0.4100 0.4Y
Oct 01, 2009 DIST-A 15 15 0.33 0.4Y
Sep 01, 2009 DIST-A 15 15 0.36 0.4Y
Aug 01, 2009 DIST-A 15 15 0.32 0.4Y
Jul 01, 2009 DIST-A 15 15 0.3 0.4Y
Jun 01, 2009 DIST-A 15 15 0.34 0.4Y
May 01, 2009 DIST-A 15 15 .53 0.4Y
Apr 01, 2009 DIST-A 15 15 0.35 0.4Y
Mar 01, 2009 DIST-A 15 15 0.55 0.4Y
Feb 01, 2009 DIST-A 15 15 0.2 0.4Y
Jan 01, 2009 DIST-A 15 15 .36 0.4Y
Dec 01, 2008 DIST-A 15 15 .32 0.4Y
Nov 01, 2008 DIST-A 15 15 .28 0.4Y
Oct 01, 2008 DIST-A 15 15 .29 0.4Y
Sep 01, 2008 DIST-A 15 15 .50 0.4Y
Aug 01, 2008 DIST-A 15 15 .49 0.4Y
Jul 01, 2008 DIST-A 15 15 .27 0.4Y
Jun 01, 2008 DIST-A 15 15 .41 0.4Y
May 01, 2008 DIST-A 15 15 .44 0.4Y
Apr 01, 2008 DIST-A 15 15 .35 0.4Y
Mar 01, 2008 DIST-A 15 15 .33 0.4Y
Feb 01, 2008 DIST-A 15 15 .37 0.4Y
Jan 01, 2008 DIST-A 15 15 .33 0.4Y
Dec 01, 2007 DIST-A 15 15 .34 0.4Y
Nov 01, 2007 DIST-A 15 15 .31 0.4Y
Oct 01, 2007 DIST-A 15 15 .31 0.4Y
Sep 01, 2007 DIST-A 15 15 .38 0.4Y
Aug 01, 2007 DIST-A 15 15 .44 0.4Y
Jul 01, 2007 DIST-A 15 15 .29 0.4Y
Jun 01, 2007 DIST-A 15 15 0.4 0.4Y
May 01, 2007 DIST-A 15 15 .43 0.4Y
Apr 01, 2007 DIST-A 15 15 .38 0.4Y
Mar 01, 2007 DIST-A 0 15 .50 0.4Y
Feb 01, 2007 DIST-A 15 15 .38 0.4Y
Jan 01, 2007 DIST-A 15 15 .68 0.4Y
Dec 01, 2006 DIST-A 15 15 .37 0.4Y
Nov 01, 2006 DIST-A 0 15 .42 0.4Y
Oct 01, 2006 DIST-A 15 15 .36 0.4Y
Sep 01, 2006 DIST-A 15 15 .41 0.4Y
Aug 01, 2006 DIST-A 15 15 .44 0.4Y
Jul 01, 2006 DIST-A 15 15 .45 0.4Y
Jun 01, 2006 DIST-A 15 15 .32 0.4Y
May 01, 2006 DIST-A 15 15 .41 0.4Y
Apr 01, 2006 DIST-A 15 15 .43 0.4Y
Mar 01, 2006 DIST-A 15 15 .37 0.4Y
Feb 01, 2006 DIST-A 15 15 .44 0.4Y
Jan 01, 2006 DIST-A 15 15 .42 0.4Y
Dec 01, 2005 DIST-A 15 15 .39 0.4Y
Nov 01, 2005 DIST-A 15 15 .35 0.5Y
Oct 01, 2005 DIST-A 15 15 .54 0.5Y
Sep 01, 2005 DIST-A 15 15 .43 0.5Y
Aug 01, 2005 DIST-A 15 15 .47 0.4Y
Jul 01, 2005 DIST-A 15 15 .44 0.5Y
Jun 01, 2005 DIST-A 15 15 .40 0.5Y
May 01, 2005 DIST-A 15 15 .45 0.5Y
Apr 01, 2005 DIST-A 15 15 .48 0.5Y
Mar 01, 2005 DIST-A 15 15 .43 0.6Y
Feb 01, 2005 DIST-A 15 15 .46 0.6Y
Jan 01, 2005 DIST-A 15 15 .53 0.6Y
Dec 01, 2004 DIST-A 15 15 .53 0.6Y
Nov 01, 2004 DIST-A 15 15 .49 0.6Y
Oct 01, 2004 DIST-A 15 15 .33 0.6Y
Sep 01, 2004 DIST-A 15 15 .31 0.7Y
 



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