OHA Drinking Water Services
OR41
PWS ID: 00869 ---- THE DALLES, 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
Feb 01, 2024 DIST-A 15 30 0.9 1.0Y
Jan 01, 2024 DIST-A 15 23 1 1.0Y
Dec 01, 2023 DIST-A 15 30 0.9 1.0Y
Nov 01, 2023 DIST-A 15 30 1 1.0Y
Oct 01, 2023 DIST-A 18 38 1.0 1.0Y
Sep 01, 2023 DIST-A 18 33 1.0 1.0Y
Aug 01, 2023 DIST-A 10 31 0.9 1.0Y
Jul 01, 2023 DIST-A 10 31 0.9 1.0Y
Jun 01, 2023 DIST-A 10 31 1.0 1.0Y
May 01, 2023 DIST-A 10 30 1 1.0Y
Apr 01, 2023 DIST-A 10 29 0.94 1.0Y
Mar 01, 2023 DIST-A 10 24 0.9 1.0Y
Feb 01, 2023 DIST-A 10 30 1 1.0Y
Jan 01, 2023 DIST-A 10 36 1 1.0Y
Dec 01, 2022 DIST-A 10 22 1.0 1.0Y
Nov 01, 2022 DIST-A 10 37 1 1.0Y
Oct 01, 2022 DIST-A 10 21 1.0 1.0Y
Sep 01, 2022 DIST-A 10 28 1 1.0Y
Aug 01, 2022 DIST-A 10 27 1 1.0Y
Jul 01, 2022 DIST-A 10 21 0.9 0.9Y
Jun 01, 2022 DIST-A 10 27 1.0 0.9Y
May 01, 2022 DIST-A 10 27 1 0.9Y
Apr 01, 2022 DIST-A 10 27 1.0 0.9Y
Mar 01, 2022 DIST-A 10 27 0.92 0.9Y
Feb 01, 2022 DIST-A 10 20 0.96 0.9Y
Jan 01, 2022 DIST-A 10 22 1 0.9Y
Dec 01, 2021 DIST-A 10 20 1 0.9Y
Nov 01, 2021 DIST-A 10 27 1 0.9Y
Oct 01, 2021 DIST-A 10 20 0.8 0.9Y
Sep 01, 2021 DIST-A 10 21 0.9 1.0Y
Aug 01, 2021 DIST-A 10 27 0.9 1.0Y
Jul 01, 2021 DIST-A 10 26 0.79 1.0Y
Jun 01, 2021 DIST-A 10 33 0.9 1.0Y
May 01, 2021 DIST-A 10 13 1 1.0Y
Apr 01, 2021 DIST-A 10 27 1.1 1.0Y
Mar 01, 2021 DIST-A 10 27 0.9 1.0Y
Feb 01, 2021 DIST-A 10 26 1 1.0Y
Jan 01, 2021 DIST-A 10 27 1 1.0Y
Dec 01, 2020 DIST-A 10 20 1.0 1.0Y
Nov 01, 2020 DIST-A 10 20 1.0 1.0Y
Oct 01, 2020 DIST-A 10 14 1 0.9Y
Sep 01, 2020 DIST-A 10 20 0.99 0.9Y
Aug 01, 2020 DIST-A 10 27 0.9 1.0Y
Jul 01, 2020 DIST-A 10 27 1.0 1.0Y
Jun 01, 2020 DIST-A 10 32 1.0 1.0Y
May 01, 2020 DIST-A 10 27 1.0 1.0Y
Apr 01, 2020 DIST-A 10 26 1 1.0Y
Mar 01, 2020 DIST-A 10 25 1.0 0.9Y
Feb 01, 2020 DIST-A 10 19 0.8 0.9Y
Jan 01, 2020 DIST-A 10 19 0.9 1.0Y
Dec 01, 2019 DIST-A 10 17 0.9 1.0Y
Nov 01, 2019 DIST-A 10 27 0.9 1.0Y
Oct 01, 2019 DIST-A 10 18 1.0 1.0Y
Sep 01, 2019 DIST-A 10 27 1.0 1.0Y
Aug 01, 2019 DIST-A 10 26 1.0 1.0Y
Jul 01, 2019 DIST-A 10 26 0.9 1.0Y
Jun 01, 2019 DIST-A 10 19 1.0 1.0Y
May 01, 2019 DIST-A 10 24 1 1.0Y
Apr 01, 2019 DIST-A 10 27 0.9 1.0Y
Mar 01, 2019 DIST-A 10 21 1.0 1.0Y
Feb 01, 2019 DIST-A 10 13 1 1.0Y
Jan 01, 2019 DIST-A 10 27 1 1.0Y
Dec 01, 2018 DIST-A 10 20 1.1 1.0Y
Nov 01, 2018 DIST-A 10 20 1.0 1.0Y
Oct 01, 2018 DIST-A 10 26 1 1.0Y
Sep 01, 2018 DIST-A 10 13 1 1.0Y
Aug 01, 2018 DIST-A 10 24 1.0 1.0Y
Jul 01, 2018 DIST-A 10 25 1 1.0Y
Jun 01, 2018 DIST-A 10 26 1.02 1.0Y
May 01, 2018 DIST-A 10 26 0.9 1.0Y
Apr 01, 2018 DIST-A 10 26 1 1.0Y
Mar 01, 2018 DIST-A 10 27 0.9 1.0Y
Feb 01, 2018 DIST-A 10 24 1 1.1Y
Jan 01, 2018 DIST-A 10 34 1.05 1.1Y
Dec 01, 2017 DIST-A 10 20 1.1 1.1Y
Nov 01, 2017 DIST-A 10 26 1.1 1.1Y
Oct 01, 2017 DIST-A 10 33 1 1.1Y
Sep 01, 2017 DIST-A 10 20 1 1.1Y
Aug 01, 2017 DIST-A 10 27 1.1 1.1Y
Jul 01, 2017 DIST-A 10 28 1.0 1.1Y
Jun 01, 2017 DIST-A 10 27 1.2 1.1Y
May 01, 2017 DIST-A 10 26 1.1 1.1Y
Apr 01, 2017 DIST-A 10 24 1.0 1.1Y
Mar 01, 2017 DIST-A 10 20 1.1 1.1Y
Feb 01, 2017 DIST-A 10 25 1 1.1Y
Jan 01, 2017 DIST-A 10 20 1.2 1.1Y
Dec 01, 2016 DIST-A 10 19 1.2 1.1Y
Nov 01, 2016 DIST-A 10 27 1.1 1.1Y
Oct 01, 2016 DIST-A 10 27 1.2 1.1Y
Sep 01, 2016 DIST-A 10 18 1.2 1.0Y
Aug 01, 2016 DIST-A 10 35 1.1 1.0Y
Jul 01, 2016 DIST-A 10 28 1 1.0Y
Jun 01, 2016 DIST-A 10 27 1 1.0Y
May 01, 2016 DIST-A 10 27 1 1.0Y
Apr 01, 2016 DIST-A 10 26 1.1 1.0Y
Mar 01, 2016 DIST-A 10 27 1.0 1.0Y
Feb 01, 2016 DIST-A 10 27 1 1.0Y
Jan 01, 2016 DIST-A 10 25 1.0 1.0Y
Dec 01, 2015 DIST-A 10 26 1.05 1.0Y
Nov 01, 2015 DIST-A 10 26 1.0 1.0Y
Oct 01, 2015 DIST-A 10 28 1 1.0Y
Sep 01, 2015 DIST-A 10 29 1.1 1.0Y
Aug 01, 2015 DIST-A 10 28 1 1.0Y
Jul 01, 2015 DIST-A 10 27 1 1.0Y
Jun 01, 2015 DIST-A 10 27 0.9 1.0Y
May 01, 2015 DIST-A 10 27 1.2 1.0Y
Apr 01, 2015 DIST-A 10 27 1.1 1.0Y
Mar 01, 2015 DIST-A 10 33 1 1.0Y
Feb 01, 2015 DIST-A 10 27 1.0 1.0Y
Jan 01, 2015 DIST-A 10 27 1 1.0Y
Dec 01, 2014 DIST-A 10 25 1 1.0Y
Nov 01, 2014 DIST-A 10 21 1.2 1.0Y
Oct 01, 2014 DIST-A 10 21 1 1.0Y
Sep 01, 2014 DIST-A 10 35 1 1.0Y
Aug 01, 2014 DIST-A 10 27 1.0 1.0Y
Jul 01, 2014 DIST-A 10 27 0.95 1.0Y
Jun 01, 2014 DIST-A 10 34 1 1.0Y
May 01, 2014 DIST-A 10 26 1 1.0Y
Apr 01, 2014 DIST-A 10 27 1.0 1.0Y
Mar 01, 2014 DIST-A 10 27 1 1.0Y
Feb 01, 2014 DIST-A 10 24 1 1.0Y
Jan 01, 2014 DIST-A 10 20 1.05 1.0Y
Dec 01, 2013 DIST-A 10 27 1 1.0Y
Nov 01, 2013 DIST-A 10 24 1.0 1.0Y
Oct 01, 2013 DIST-A 10 28 0.9 1.0Y
Sep 01, 2013 DIST-A 10 35 1.0 1.0Y
Aug 01, 2013 DIST-A 10 20 1.0 1.0Y
Jul 01, 2013 DIST-A 10 32 1 1.0Y
Jun 01, 2013 DIST-A 10 26 1.11 1.0Y
May 01, 2013 DIST-A 10 30 1 1.0Y
Apr 01, 2013 DIST-A 10 19 1.0 1.0Y
Mar 01, 2013 DIST-A 10 25 1 1.0Y
Feb 01, 2013 DIST-A 10 27 1.1 1.0Y
Jan 01, 2013 DIST-A 10 28 1.1 1.0Y
Dec 01, 2012 DIST-A 10 27 1 1.0Y
Nov 01, 2012 DIST-A 10 26 1 1.0Y
Oct 01, 2012 DIST-A 10 34 1.0 1.0Y
Sep 01, 2012 DIST-A 10 28 1 1.0Y
Aug 01, 2012 DIST-A 10 29 1 1.0Y
Jul 01, 2012 DIST-A 10 33 0.9 1.0Y
Jun 01, 2012 DIST-A 10 27 1.1 1.0Y
May 01, 2012 DIST-A 10 28 1.1 1.0Y
Apr 01, 2012 DIST-A 10 33 1.0 1.0Y
Mar 01, 2012 DIST-A 10 27 1.00 1.0Y
Feb 01, 2012 DIST-A 10 28 0.98 1.0Y
Jan 01, 2012 DIST-A 10 34 1.01 1.1Y
Dec 01, 2011 DIST-A 10 27 1.09 1.1Y
Nov 01, 2011 DIST-A 10 35 1.04 1.1Y
Oct 01, 2011 DIST-A 10 21 0.97 1.0Y
Sep 01, 2011 DIST-A 10 27 1.0 1.1Y
Aug 01, 2011 DIST-A 10 33 0.84 1.1Y
Jul 01, 2011 DIST-A 10 26 0.99 1.1Y
Jun 01, 2011 DIST-A 10 19 1.15 1.1Y
May 01, 2011 DIST-A 10 28 1.16 1.1Y
Apr 01, 2011 DIST-A 10 29 1.12 1.1Y
Mar 01, 2011 DIST-A 10 36 1.11 1.1Y
Feb 01, 2011 DIST-A 10 21 1.19 1.1Y
Jan 01, 2011 DIST-A 10 30 1.05 1.1Y
Dec 01, 2010 DIST-A 10 28 1.02 1.1Y
Nov 01, 2010 DIST-A 10 34 1.01 1.1Y
Oct 01, 2010 DIST-A 10 22 1.03 1.1Y
Sep 01, 2010 DIST-A 10 29 1.01 1.1Y
Aug 01, 2010 DIST-A 10 34 0.97 1.1Y
Jul 01, 2010 DIST-A 10 27 1.04 1.0Y
Jun 01, 2010 DIST-A 10 34 1.13 1.0Y
May 01, 2010 DIST-A 10 25 1.18 1.0Y
Apr 01, 2010 DIST-A 10 25 1.03 1.0Y
Mar 01, 2010 DIST-A 10 24 1.10 1.0Y
Feb 01, 2010 DIST-A 10 24 1.04 1.0Y
Jan 01, 2010 DIST-A 10 24 1.08 1.0Y
Dec 01, 2009 DIST-A 10 21 1.08 1.0Y
Nov 01, 2009 DIST-A 10 28 0.98 1.0Y
Oct 01, 2009 DIST-A 10 28 1.02 1.0Y
Sep 01, 2009 DIST-A 10 30 0.98 1.0Y
Aug 01, 2009 DIST-A 10 35 0.89 1.0Y
Jul 01, 2009 DIST-A 10 0 1.0Y
Jun 01, 2009 DIST-A 10 0 1.0Y
May 01, 2009 DIST-A 10 0 1.0Y
Apr 01, 2009 DIST-A 10 29 1.04 1.0Y
Mar 01, 2009 DIST-A 10 27 0.83 1.0Y
Feb 01, 2009 DIST-A 10 27 0.93 1.0Y
Jan 01, 2009 DIST-A 10 24 0.98 1.0Y
Dec 01, 2008 DIST-A 10 23 1.10 0.9Y
Nov 01, 2008 DIST-A 10 28 1.04 0.9Y
Oct 01, 2008 DIST-A 10 27 0.98 0.9Y
Sep 01, 2008 DIST-A 10 35 0.96 0.9Y
Aug 01, 2008 DIST-A 10 28 1.01 0.9Y
Jul 01, 2008 DIST-A 10 37 0.92 0.9Y
Jun 01, 2008 DIST-A 10 28 0.96 0.9Y
May 01, 2008 DIST-A 10 26 0.97 0.9Y
Apr 01, 2008 DIST-A 10 27 .90 0.9Y
Mar 01, 2008 DIST-A 10 33 0.83 0.9Y
Feb 01, 2008 DIST-A 10 28 0.84 0.9Y
Jan 01, 2008 DIST-A 10 34 0.83 0.9Y
Dec 01, 2007 DIST-A 15 26 0.86 0.9Y
Nov 01, 2007 DIST-A 10 27 0.88 0.9Y
Oct 01, 2007 DIST-A 10 35 0.89 0.9Y
Sep 01, 2007 DIST-A 10 28 0.94 0.9Y
Aug 01, 2007 DIST-A 10 26 0.92 0.9Y
Jul 01, 2007 DIST-A 10 35 1.04 0.9Y
Jun 01, 2007 DIST-A 10 27 00.94 0.9Y
May 01, 2007 DIST-A 10 26 1.04 0.9Y
Apr 01, 2007 DIST-A 10 32 0.94 0.9Y
Mar 01, 2007 DIST-A 0 26 0.86 0.9Y
Feb 01, 2007 DIST-A 10 27 0.88 0.9Y
Jan 01, 2007 DIST-A 10 33 0.79 0.9Y
Dec 01, 2006 DIST-A 30 26 0.88 0.9Y
Nov 01, 2006 DIST-A 0 26 0.92 0.9Y
Oct 01, 2006 DIST-A 10 33 1.03 0.9Y
Sep 01, 2006 DIST-A 15 26 1.03 0.9Y
Aug 01, 2006 DIST-A 10 27 0.96 0.9Y
Jul 01, 2006 DIST-A 10 36 0.97 0.9Y
Jun 01, 2006 DIST-A 10 30 0.97 0.9Y
May 01, 2006 DIST-A 10 36 0.94 0.9Y
Apr 01, 2006 DIST-A 10 30 0.87 0.9Y
Mar 01, 2006 DIST-A 10 29 0.86 0.9Y
Feb 01, 2006 DIST-A 10 30 0.81 0.9Y
Jan 01, 2006 DIST-A 10 38 0.69 0.9Y
Dec 01, 2005 DIST-A 10 28 0.95 0.9Y
Nov 01, 2005 DIST-A 10 32 0.87 0.9Y
Oct 01, 2005 DIST-A 25 26 0.84 0.9Y
Sep 01, 2005 DIST-A 10 26 0.90 0.9Y
Aug 01, 2005 DIST-A 10 35 0.82 0.9Y
Jul 01, 2005 DIST-A 10 29 0.88 0.9Y
Jun 01, 2005 DIST-A 10 25 0.95 0.9Y
May 01, 2005 DIST-A 10 33 0.91 0.9Y
Apr 01, 2005 DIST-A 10 27 0.87 0.9Y
Mar 01, 2005 DIST-A 10 30 0.95 0.9Y
Feb 01, 2005 DIST-A 10 27 0.96 0.9Y
Jan 01, 2005 DIST-A 10 34 0.95 0.9Y
Dec 01, 2004 DIST-A 10 28 0.92 0.9Y
Nov 01, 2004 DIST-A 10 34 0.91 0.9Y
Oct 01, 2004 DIST-A 10 29 0.93 0.9Y
Sep 01, 2004 DIST-A 10 26 0.94 0.9Y
 




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