OHA Drinking Water Services
OR41
PWS ID: 00657 ---- PORTLAND WATER BUREAU
Coliform Summary History

Note: Samples for a given monitoring period are due 10 days after period end date. Therefore the most recent monitoring periods may show zero samples reported. This does not mean the water system is out of compliance.

Number of Samples Reported
Abbreviations: TC+: Total Coliform Positive, EC+: E. Coli Positive
Exclude results older than 2021
Period End Date Routines Required Routines Reported Routine TC+ Routine EC+ Repeats Reported Repeat TC+ Repeat EC+ Period Type
Apr 30, 2024 240 000000MN
Mar 31, 2024 240 25600000MN
Feb 29, 2024 240 25100000MN
Jan 31, 2024 240 25200000MN
Dec 31, 2023 240 26500000MN
Nov 30, 2023 240 25700000MN
Oct 31, 2023 240 25300000MN
Sep 30, 2023 240 26130900MN
Aug 31, 2023 240 25400000MN
Jul 31, 2023 240 25810300MN
Jun 30, 2023 240 25610300MN
May 31, 2023 240 25300000MN
Apr 30, 2023 240 25900000MN
Mar 31, 2023 240 25300000MN
Feb 28, 2023 240 24200000MN
Jan 31, 2023 240 25700000MN
Dec 31, 2022 240 27100000MN
Nov 30, 2022 240 27000000MN
Oct 31, 2022 240 26110300MN
Sep 30, 2022 240 26010300MN
Aug 31, 2022 240 25300000MN
Jul 31, 2022 240 23810300MN
Jun 30, 2022 240 25200000MN
May 31, 2022 240 25200000MN
Apr 30, 2022 240 25700000MN
Mar 31, 2022 240 25100000MN
Feb 28, 2022 240 25200000MN
Jan 31, 2022 240 25300000MN
Dec 31, 2021 240 25900000MN
Nov 30, 2021 240 25300000MN
Oct 31, 2021 240 25900000MN
Sep 30, 2021 240 24910300MN
Aug 31, 2021 240 25600000MN
Jul 31, 2021 240 25800000MN
Jun 30, 2021 240 25800000MN
May 31, 2021 240 25300000MN
Apr 30, 2021 240 25700000MN
Mar 31, 2021 240 24900000MN
Feb 28, 2021 240 25300000MN
Jan 31, 2021 240 26800000MN
Dec 31, 2020 240 26500000MN
Nov 30, 2020 240 25711300MN
Oct 31, 2020 240 25500000MN
Sep 30, 2020 240 25600000MN
Aug 31, 2020 240 25410300MN
Jul 31, 2020 240 25100000MN
Jun 30, 2020 240 24210300MN
May 31, 2020 240 25800000MN
Apr 30, 2020 240 25600000MN
Mar 31, 2020 240 25000000MN
Feb 29, 2020 240 26000000MN
Jan 31, 2020 240 25900000MN
Dec 31, 2019 240 25900000MN
Nov 30, 2019 240 26000000MN
Oct 31, 2019 240 25600000MN
Sep 30, 2019 240 25900000MN
Aug 31, 2019 240 25910300MN
Jul 31, 2019 240 26710300MN
Jun 30, 2019 240 26100000MN
May 31, 2019 240 25900000MN
Apr 30, 2019 240 27400000MN
Mar 31, 2019 240 25800000MN
Feb 28, 2019 240 26800000MN
Jan 31, 2019 240 25700000MN
Dec 31, 2018 240 25800000MN
Nov 30, 2018 240 26620600MN
Oct 31, 2018 240 28700000MN
Sep 30, 2018 240 25500000MN
Aug 31, 2018 240 27010300MN
Jul 31, 2018 240 25910300MN
Jun 30, 2018 240 25910300MN
May 31, 2018 240 27700000MN
Apr 30, 2018 240 25900000MN
Mar 31, 2018 240 26000000MN
Feb 28, 2018 210 25800000MN
Jan 31, 2018 210 26000000MN
Dec 31, 2017 210 25800000MN
Nov 30, 2017 210 26200000MN
Oct 31, 2017 210 28300000MN
Sep 30, 2017 210 25600000MN
Aug 31, 2017 210 28200000MN
Jul 31, 2017 210 25720600MN
Jun 30, 2017 210 25600000MN
May 31, 2017 210 26600000MN
Apr 30, 2017 210 25500000MN
Mar 31, 2017 210 26300000MN
Feb 28, 2017 210 25800000MN
Jan 31, 2017 210 25800000MN
Dec 31, 2016 210 25700000MN
Nov 30, 2016 210 25700000MN
Oct 31, 2016 210 25110610MN
Sep 30, 2016 210 25300000MN
Aug 31, 2016 210 28000000MN
Jul 31, 2016 210 25800000MN
Jun 30, 2016 210 25400000MN
May 31, 2016 210 23600000MN
Apr 30, 2016 210 22300000MN
Mar 31, 2016 210 25800000MN
Feb 29, 2016 210 22500000MN
Jan 31, 2016 210 23100000MN
Dec 31, 2015 210 25500000MN
Nov 30, 2015 210 23000000MN
Oct 31, 2015 210 22800000MN
Sep 30, 2015 210 23800000MN
Aug 31, 2015 210 23810300MN
Jul 31, 2015 210 23600000MN
Jun 30, 2015 210 28100000MN
May 31, 2015 210 22310300MN
Apr 30, 2015 210 28000000MN
Mar 31, 2015 210 28600000MN
Feb 28, 2015 210 24600000MN
Jan 31, 2015 210 26310610MN
Dec 31, 2014 210 28500000MN
Nov 30, 2014 210 24300000MN
Oct 31, 2014 210 33310300MN
Sep 30, 2014 210 31030900MN
Aug 31, 2014 210 28710300MN
Jul 31, 2014 210 32210300MN
Jun 30, 2014 210 29110300MN
May 31, 2014 210 26933900MN
Apr 30, 2014 210 28200000MN
Mar 31, 2014 210 25711300MN
Feb 28, 2014 210 22600000MN
Jan 31, 2014 210 23700000MN
Dec 31, 2013 210 24000000MN
Nov 30, 2013 210 24010300MN
Oct 31, 2013 210 28810300MN
Sep 30, 2013 210 32114066310MN
Aug 31, 2013 210 27020600MN
Jul 31, 2013 210 28600000MN
Jun 30, 2013 210 24200000MN
May 31, 2013 210 27300000MN
Apr 30, 2013 210 26600000MN
Mar 31, 2013 210 24300000MN
Feb 28, 2013 210 22600000MN
Jan 31, 2013 210 25300000MN
Dec 31, 2012 210 23800000MN
Nov 30, 2012 210 23100000MN
Oct 31, 2012 210 29821600MN
Sep 30, 2012 210 22700000MN
Aug 31, 2012 210 26900000MN
Jul 31, 2012 210 26011610MN
Jun 30, 2012 210 23710300MN
May 31, 2012 210 28510300MN
Apr 30, 2012 210 28210300MN
Mar 31, 2012 210 26400000MN
Feb 29, 2012 210 26730900MN
Jan 31, 2012 210 29700000MN
Dec 31, 2011 210 29100000MN
Nov 30, 2011 210 31800000MN
Oct 31, 2011 210 32600000MN
Sep 30, 2011 210 31110300MN
Aug 31, 2011 210 34930900MN
Jul 31, 2011 210 27710300MN
Jun 30, 2011 210 32410300MN
May 31, 2011 210 31300000MN
Apr 30, 2011 210 25600000MN
Mar 31, 2011 210 30600000MN
Feb 28, 2011 210 24310300MN
Jan 31, 2011 210 25800000MN
Dec 31, 2010 210 26500000MN
Nov 30, 2010 210 25200000MN
Oct 31, 2010 210 230401820MN
Sep 30, 2010 210 28320600MN
Aug 31, 2010 210 319401820MN
Jul 31, 2010 210 28820600MN
Jun 30, 2010 210 31831900MN
May 31, 2010 210 27700000MN
Apr 30, 2010 210 29511300MN
Mar 31, 2010 210 35900000MN
Feb 28, 2010 210 27500000MN
Jan 31, 2010 210 27400000MN
Dec 31, 2009 210 27710300MN
Nov 30, 2009 210 26411611MN
Oct 31, 2009 210 292702710MN
Sep 30, 2009 210 28920300MN
Aug 31, 2009 210 30030900MN
Jul 31, 2009 210 305401820MN
Jun 30, 2009 210 30810300MN
May 31, 2009 210 24020600MN
Apr 30, 2009 210 27900000MN
Mar 31, 2009 210 29600000MN
Feb 28, 2009 210 24810300MN
Jan 31, 2009 210 26300000MN
Dec 31, 2008 210 25910300MN
Nov 30, 2008 210 23400000MN
Oct 31, 2008 210 29100000MN
Sep 30, 2008 210 27520600MN
Aug 31, 2008 210 256301830MN
Jul 31, 2008 210 33830900MN
Jun 30, 2008 210 28810300MN
May 31, 2008 210 27700000MN
Apr 30, 2008 210 32900000MN
Mar 31, 2008 210 30700000MN
Feb 29, 2008 210 26600000MN
Jan 31, 2008 210 28700000MN
Dec 31, 2007 210 28400000MN
Nov 30, 2007 210 23910300MN
Oct 31, 2007 210 33220600MN
Sep 30, 2007 210 26420600MN
Aug 31, 2007 210 33200000MN
Jul 31, 2007 210 32400000MN
Jun 30, 2007 210 30700000MN
May 31, 2007 210 33700000MN
Apr 30, 2007 210 31400000MN
Mar 31, 2007 210 32200000MN
Feb 28, 2007 210 28100000MN
Jan 31, 2007 210 30800000MN
Dec 31, 2006 210 27100000MN
Nov 30, 2006 210 31500000MN
Oct 31, 2006 210 32000000MN
Sep 30, 2006 210 27600000MN
Aug 31, 2006 210 35800000MN
Jul 31, 2006 210 28900000MN
Jun 30, 2006 210 34000000MN
May 31, 2006 210 33100000MN
Apr 30, 2006 210 30500000MN
Mar 31, 2006 210 34000000MN
Feb 28, 2006 210 28800000MN
Jan 31, 2006 210 30900000MN
Dec 31, 2005 210 29700000MN
Nov 30, 2005 210 32600000MN
Oct 31, 2005 210 32500000MN
Sep 30, 2005 210 30800000MN
Aug 31, 2005 210 35730900MN
Jul 31, 2005 210 28100000MN
Jun 30, 2005 210 30300000MN
May 31, 2005 210 31900000MN
Apr 30, 2005 210 29900000MN
Mar 31, 2005 210 35400000MN
Feb 28, 2005 210 28300000MN
Jan 31, 2005 210 28700000MN
Dec 31, 2004 210 31400000MN
Nov 30, 2004 210 28800000MN
Oct 31, 2004 210 28800000MN
Sep 30, 2004 210 30100000MN
Aug 31, 2004 210 30020600MN
Jul 31, 2004 210 24900000MN
Jun 30, 2004 210 31711300MN
May 31, 2004 210 28000000MN
Apr 30, 2004 210 29600000MN
Mar 31, 2004 210 33700000MN
Feb 29, 2004 210 24310300MN
Jan 31, 2004 210 248401200MN
Dec 31, 2003 210 31100000MN
Nov 30, 2003 210 22500000MN
Oct 31, 2003 210 29420910MN
Sep 30, 2003 210 28510300MN
Aug 31, 2003 210 265501500MN
Jul 31, 2003 210 30700000MN
Jun 30, 2003 210 28720600MN
May 31, 2003 210 26500000MN
Apr 30, 2003 210 32000000MN
Mar 31, 2003 210 30100000MN
Feb 28, 2003 210 26600000MN
Jan 31, 2003 210 28100000MN
Dec 31, 2002 210 29000000MN
Nov 30, 2002 210 24300000MN
Oct 31, 2002 210 31700000MN
Sep 30, 2002 210 28500000MN
Aug 31, 2002 210 29911300MN
Jul 31, 2002 210 30600000MN
Jun 30, 2002 210 28900000MN
May 31, 2002 210 29300000MN
Apr 30, 2002 210 31200000MN
Mar 31, 2002 210 27200000MN
Feb 28, 2002 210 26710300MN
Jan 31, 2002 210 30800000MN
Exclude results older than 2021

More information for this water system: SDWIS ID 3900
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