OHA Drinking Water Services
PWS ID: 00657 ---- PORTLAND WATER BUREAU
Coliform Summary History

Number of Samples Reported Abbreviations: TC+: Total Coliform Positive, FC+: Fecal Coliform Positive
Period End Date Routines Reported Routine TC+ Routine FC+ Repeats Reported Repeat TC+ Repeat FC+ Period Type
Sep 30, 2023 330600MN
Sep 30, 2023 000000QT
Aug 31, 2023 25400000MN
Jul 31, 2023 25810300MN
Jun 30, 2023 0000006M
Jun 30, 2023 25610300MN
Jun 30, 2023 000000QT
May 31, 2023 25300000MN
Apr 30, 2023 25900000MN
Mar 31, 2023 25300000MN
Mar 31, 2023 000000QT
Feb 28, 2023 24200000MN
Jan 31, 2023 25700000MN
Dec 31, 2022 0000006M
Dec 31, 2022 27100000MN
Dec 31, 2022 000000QT
Nov 30, 2022 27000000MN
Oct 31, 2022 26110300MN
Sep 30, 2022 26010300MN
Sep 30, 2022 000000QT
Aug 31, 2022 25300000MN
Jul 31, 2022 23810300MN
Jun 30, 2022 0000006M
Jun 30, 2022 25200000MN
Jun 30, 2022 000000QT
May 31, 2022 25200000MN
Apr 30, 2022 25700000MN
Mar 31, 2022 25100000MN
Mar 31, 2022 000000QT
Feb 28, 2022 25200000MN
Jan 31, 2022 25300000MN
Dec 31, 2021 0000006M
Dec 31, 2021 25900000MN
Dec 31, 2021 000000QT
Nov 30, 2021 25300000MN
Oct 31, 2021 25900000MN
Sep 30, 2021 24910300MN
Sep 30, 2021 000000QT
Aug 31, 2021 25600000MN
Jul 31, 2021 25800000MN
Jun 30, 2021 0000006M
Jun 30, 2021 25800000MN
Jun 30, 2021 000000QT
May 31, 2021 25300000MN
Apr 30, 2021 25700000MN
Mar 31, 2021 24900000MN
Mar 31, 2021 000000QT
Feb 28, 2021 25300000MN
Jan 31, 2021 26800000MN
Dec 31, 2020 0000006M
Dec 31, 2020 26500000MN
Dec 31, 2020 000000QT
Nov 30, 2020 25711300MN
Oct 31, 2020 25500000MN
Sep 30, 2020 25600000MN
Sep 30, 2020 000000QT
Aug 31, 2020 25410300MN
Jul 31, 2020 25100000MN
Jun 30, 2020 0000006M
Jun 30, 2020 24210300MN
Jun 30, 2020 000000QT
May 31, 2020 25800000MN
Apr 30, 2020 25600000MN
Mar 31, 2020 25000000MN
Mar 31, 2020 000000QT
Feb 29, 2020 26000000MN
Jan 31, 2020 25900000MN
Dec 31, 2019 0000006M
Dec 31, 2019 0000009Y
Dec 31, 2019 25900000MN
Dec 31, 2019 000000QT
Nov 30, 2019 26000000MN
Oct 31, 2019 25600000MN
Sep 30, 2019 25900000MN
Sep 30, 2019 000000QT
Aug 31, 2019 25910300MN
Jul 31, 2019 26710300MN
Jun 30, 2019 0000006M
Jun 30, 2019 26100000MN
Jun 30, 2019 000000QT
May 31, 2019 25900000MN
Apr 30, 2019 27400000MN
Mar 31, 2019 25800000MN
Mar 31, 2019 000000QT
Feb 28, 2019 26800000MN
Jan 31, 2019 25700000MN
Dec 31, 2018 0000006M
Dec 31, 2018 25800000MN
Dec 31, 2018 000000QT
Nov 30, 2018 26620600MN
Oct 31, 2018 28700000MN
Sep 30, 2018 25500000MN
Sep 30, 2018 000000QT
Aug 31, 2018 27010300MN
Jul 31, 2018 25910300MN
Jun 30, 2018 0000006M
Jun 30, 2018 25910300MN
Jun 30, 2018 000000QT
May 31, 2018 27700000MN
Apr 30, 2018 25900000MN
Mar 31, 2018 26000000MN
Mar 31, 2018 000000QT
Feb 28, 2018 25800000MN
Jan 31, 2018 26000000MN
Dec 31, 2017 0000006M
Dec 31, 2017 25800000MN
Dec 31, 2017 000000QT
Nov 30, 2017 26200000MN
Oct 31, 2017 28300000MN
Sep 30, 2017 25600000MN
Sep 30, 2017 000000QT
Aug 31, 2017 28200000MN
Jul 31, 2017 25720600MN
Jun 30, 2017 0000006M
Jun 30, 2017 25600000MN
Jun 30, 2017 000000QT
May 31, 2017 26600000MN
Apr 30, 2017 25500000MN
Mar 31, 2017 26300000MN
Mar 31, 2017 000000QT
Feb 28, 2017 25800000MN
Jan 31, 2017 25800000MN
Dec 31, 2016 0000006M
Dec 31, 2016 25700000MN
Dec 31, 2016 000000QT
Nov 30, 2016 25700000MN
Oct 31, 2016 25110610MN
Sep 30, 2016 25300000MN
Sep 30, 2016 000000QT
Aug 31, 2016 28000000MN
Jul 31, 2016 25800000MN
Jun 30, 2016 0000006M
Jun 30, 2016 25400000MN
Jun 30, 2016 000000QT
May 31, 2016 23600000MN
Apr 30, 2016 22300000MN
Mar 31, 2016 25800000MN
Mar 31, 2016 000000QT
Feb 29, 2016 22500000MN
Jan 31, 2016 23100000MN
Dec 31, 2015 0000006M
Dec 31, 2015 25500000MN
Dec 31, 2015 000000QT
Nov 30, 2015 23000000MN
Oct 31, 2015 22800000MN
Sep 30, 2015 23800000MN
Sep 30, 2015 000000QT
Aug 31, 2015 23810300MN
Jul 31, 2015 23600000MN
Jun 30, 2015 0000006M
Jun 30, 2015 28100000MN
Jun 30, 2015 000000QT
May 31, 2015 22310300MN
Apr 30, 2015 28000000MN
Mar 31, 2015 28600000MN
Mar 31, 2015 000000QT
Feb 28, 2015 24600000MN
Jan 31, 2015 26310610MN
Dec 31, 2014 0000006M
Dec 31, 2014 28500000MN
Dec 31, 2014 000000QT
Nov 30, 2014 24300000MN
Oct 31, 2014 33310300MN
Sep 30, 2014 31030900MN
Sep 30, 2014 000000QT
Aug 31, 2014 28710300MN
Jul 31, 2014 32210300MN
Jun 30, 2014 0000006M
Jun 30, 2014 29110300MN
Jun 30, 2014 000000QT
May 31, 2014 26933900MN
Apr 30, 2014 28200000MN
Mar 31, 2014 25711300MN
Mar 31, 2014 000000QT
Feb 28, 2014 22600000MN
Jan 31, 2014 23700000MN
Dec 31, 2013 0000006M
Dec 31, 2013 24000000MN
Dec 31, 2013 000000QT
Nov 30, 2013 24010300MN
Oct 31, 2013 28810300MN
Sep 30, 2013 32114066310MN
Sep 30, 2013 000000QT
Aug 31, 2013 27020600MN
Jul 31, 2013 28600000MN
Jun 30, 2013 0000006M
Jun 30, 2013 24200000MN
Jun 30, 2013 000000QT
May 31, 2013 27300000MN
Apr 30, 2013 26600000MN
Mar 31, 2013 24300000MN
Mar 31, 2013 000000QT
Feb 28, 2013 22600000MN
Jan 31, 2013 25300000MN
Dec 31, 2012 0000006M
Dec 31, 2012 23800000MN
Dec 31, 2012 000000QT
Nov 30, 2012 23100000MN
Oct 31, 2012 29821600MN
Sep 30, 2012 22700000MN
Sep 30, 2012 000000QT
Aug 31, 2012 26900000MN
Jul 31, 2012 26011610MN
Jun 30, 2012 0000006M
Jun 30, 2012 23710300MN
Jun 30, 2012 000000QT
May 31, 2012 28510300MN
Apr 30, 2012 28210300MN
Mar 31, 2012 26400000MN
Mar 31, 2012 000000QT
Feb 29, 2012 26730900MN
Jan 31, 2012 29700000MN
Dec 31, 2011 0000006M
Dec 31, 2011 29100000MN
Dec 31, 2011 000000QT
Nov 30, 2011 31800000MN
Oct 31, 2011 32600000MN
Sep 30, 2011 31110300MN
Sep 30, 2011 000000QT
Aug 31, 2011 34930900MN
Jul 31, 2011 27710300MN
Jun 30, 2011 32410300MN
Jun 30, 2011 000000QT
May 31, 2011 31300000MN
Apr 30, 2011 25600000MN
Mar 31, 2011 30600000MN
Mar 31, 2011 000000QT
Feb 28, 2011 24310300MN
Jan 31, 2011 25800000MN
Dec 31, 2010 26500000MN
Dec 31, 2010 000000QT
Nov 30, 2010 25200000MN
Oct 31, 2010 230401820MN
Sep 30, 2010 28320600MN
Sep 30, 2010 000000QT
Aug 31, 2010 319401820MN
Jul 31, 2010 28820600MN
Jun 30, 2010 31831900MN
Jun 30, 2010 000000QT
May 31, 2010 27700000MN
Apr 30, 2010 29511300MN
Mar 31, 2010 35900000MN
Mar 31, 2010 000000QT
Feb 28, 2010 27500000MN
Jan 31, 2010 27400000MN
Dec 31, 2009 27710300MN
Dec 31, 2009 000000QT
Nov 30, 2009 26411611MN
Oct 31, 2009 292702710MN
Sep 30, 2009 28920300MN
Sep 30, 2009 000000QT
Aug 31, 2009 30030900MN
Jul 31, 2009 305401820MN
Jun 30, 2009 30810300MN
Jun 30, 2009 000000QT
May 31, 2009 24020600MN
Apr 30, 2009 27900000MN
Mar 31, 2009 29600000MN
Mar 31, 2009 000000QT
Feb 28, 2009 24810300MN
Jan 31, 2009 26300000MN
Dec 31, 2008 25910300MN
Dec 31, 2008 000000QT
Nov 30, 2008 23400000MN
Oct 31, 2008 29100000MN
Sep 30, 2008 27520600MN
Sep 30, 2008 000000QT
Aug 31, 2008 256301830MN
Jul 31, 2008 33830900MN
Jun 30, 2008 28810300MN
Jun 30, 2008 000000QT
May 31, 2008 27700000MN
Apr 30, 2008 32900000MN
Mar 31, 2008 30700000MN
Mar 31, 2008 000000QT
Feb 29, 2008 26600000MN
Jan 31, 2008 28700000MN
Dec 31, 2007 28400000MN
Dec 31, 2007 000000QT
Nov 30, 2007 23910300MN
Oct 31, 2007 33220600MN
Sep 30, 2007 26420600MN
Sep 30, 2007 000000QT
Aug 31, 2007 33200000MN
Jul 31, 2007 32400000MN
Jun 30, 2007 30700000MN
Jun 30, 2007 000000QT
May 31, 2007 33700000MN
Apr 30, 2007 31400000MN
Mar 31, 2007 32200000MN
Mar 31, 2007 000000QT
Feb 28, 2007 28100000MN
Jan 31, 2007 30800000MN
Dec 31, 2006 0000006M
Dec 31, 2006 27100000MN
Dec 31, 2006 000000QT
Nov 30, 2006 31500000MN
Oct 31, 2006 32000000MN
Sep 30, 2006 27600000MN
Sep 30, 2006 000000QT
Aug 31, 2006 35800000MN
Jul 31, 2006 28900000MN
Jun 30, 2006 34000000MN
Jun 30, 2006 000000QT
May 31, 2006 33100000MN
Apr 30, 2006 30500000MN
Mar 31, 2006 34000000MN
Mar 31, 2006 000000QT
Feb 28, 2006 28800000MN
Jan 31, 2006 30900000MN
Dec 31, 2005 29700000MN
Dec 31, 2005 000000QT
Nov 30, 2005 32600000MN
Oct 31, 2005 32500000MN
Sep 30, 2005 30800000MN
Sep 30, 2005 000000QT
Aug 31, 2005 35730900MN
Jul 31, 2005 28100000MN
Jun 30, 2005 30300000MN
Jun 30, 2005 000000QT
May 31, 2005 31900000MN
Apr 30, 2005 29900000MN
Mar 31, 2005 35400000MN
Mar 31, 2005 000000QT
Feb 28, 2005 28300000MN
Jan 31, 2005 28700000MN
Dec 31, 2004 0000003Y
Dec 31, 2004 31400000MN
Dec 31, 2004 000000QT
Nov 30, 2004 28800000MN
Oct 31, 2004 28800000MN
Sep 30, 2004 30100000MN
Sep 30, 2004 000000QT
Aug 31, 2004 30020600MN
Jul 31, 2004 24900000MN
Jun 30, 2004 31711300MN
May 31, 2004 28000000MN
Apr 30, 2004 29600000MN
Mar 31, 2004 33700000MN
Mar 31, 2004 000000QT
Feb 29, 2004 24310300MN
Jan 31, 2004 248401200MN
Dec 31, 2003 31100000MN
Dec 31, 2003 000000QT
Nov 30, 2003 22500000MN
Oct 31, 2003 29420910MN
Sep 30, 2003 28510300MN
Sep 30, 2003 000000QT
Aug 31, 2003 265501500MN
Jul 31, 2003 30700000MN
Jun 30, 2003 28720600MN
Jun 30, 2003 000000QT
May 31, 2003 26500000MN
Apr 30, 2003 32000000MN
Mar 31, 2003 30100000MN
Mar 31, 2003 000000QT
Feb 28, 2003 26600000MN
Jan 31, 2003 28100000MN
Dec 31, 2002 29000000MN
Dec 31, 2002 000000QT
Nov 30, 2002 24300000MN
Oct 31, 2002 31700000MN
Sep 30, 2002 28500000MN
Sep 30, 2002 000000QT
Aug 31, 2002 29911300MN
Jul 31, 2002 30600000MN
Jun 30, 2002 28900000MN
Jun 30, 2002 000000QT
May 31, 2002 29300000MN
Apr 30, 2002 31200000MN
Mar 31, 2002 27200000MN
Feb 28, 2002 26710300MN
Jan 31, 2002 30800000MN
Show results prior to 01/01/2002


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