OHA Drinking Water Services
OR41
PWS ID: 00587 ---- ONTARIO, CITY OF
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
Dec 31, 2024 15 000000MN
Nov 30, 2024 15 000000MN
Oct 31, 2024 15 000000MN
Sep 30, 2024 15 000000MN
Aug 31, 2024 15 000000MN
Jul 31, 2024 15 000000MN
Jun 30, 2024 15 1500000MN
May 31, 2024 15 1600000MN
Apr 30, 2024 15 1500000MN
Mar 31, 2024 15 1500000MN
Feb 29, 2024 15 1500000MN
Jan 31, 2024 15 1500000MN
Dec 31, 2023 15 1500000MN
Nov 30, 2023 15 1500000MN
Oct 31, 2023 15 1500000MN
Sep 30, 2023 15 1500000MN
Aug 31, 2023 15 1500000MN
Jul 31, 2023 15 1500000MN
Jun 30, 2023 15 1500000MN
May 31, 2023 15 1500000MN
Apr 30, 2023 15 1500000MN
Mar 31, 2023 15 1500000MN
Feb 28, 2023 15 1500000MN
Jan 31, 2023 15 1500000MN
Dec 31, 2022 15 1500000MN
Nov 30, 2022 15 1500000MN
Oct 31, 2022 15 1500000MN
Sep 30, 2022 15 1500000MN
Aug 31, 2022 15 1500000MN
Jul 31, 2022 15 1500000MN
Jun 30, 2022 15 1500000MN
May 31, 2022 15 1500000MN
Apr 30, 2022 15 1500000MN
Mar 31, 2022 15 1500000MN
Feb 28, 2022 15 1500000MN
Jan 31, 2022 15 1500000MN
Dec 31, 2021 15 1500000MN
Nov 30, 2021 15 1500000MN
Oct 31, 2021 15 1500000MN
Sep 30, 2021 15 1500000MN
Aug 31, 2021 15 1500000MN
Jul 31, 2021 15 1500000MN
Jun 30, 2021 15 1500000MN
May 31, 2021 15 1500000MN
Apr 30, 2021 15 1500000MN
Mar 31, 2021 15 1500000MN
Feb 28, 2021 15 1500000MN
Jan 31, 2021 15 1500000MN
Dec 31, 2020 15 1500000MN
Nov 30, 2020 15 1500000MN
Oct 31, 2020 15 1500000MN
Sep 30, 2020 15 1500000MN
Aug 31, 2020 15 1500000MN
Jul 31, 2020 15 1500000MN
Jun 30, 2020 15 1500000MN
May 31, 2020 15 1500000MN
Apr 30, 2020 15 1500000MN
Mar 31, 2020 15 1500000MN
Feb 29, 2020 15 1500000MN
Jan 31, 2020 15 1500000MN
Dec 31, 2019 15 1500000MN
Nov 30, 2019 15 1500000MN
Oct 31, 2019 15 1500000MN
Sep 30, 2019 15 1500000MN
Aug 31, 2019 15 1500000MN
Jul 31, 2019 15 1500000MN
Jun 30, 2019 15 1500000MN
May 31, 2019 15 1500000MN
Apr 30, 2019 15 1500000MN
Mar 31, 2019 15 1500000MN
Feb 28, 2019 15 1500000MN
Jan 31, 2019 15 1500000MN
Dec 31, 2018 15 1500000MN
Nov 30, 2018 15 1500000MN
Oct 31, 2018 15 1510300MN
Sep 30, 2018 15 1500000MN
Aug 31, 2018 15 1500000MN
Jul 31, 2018 15 1500000MN
Jun 30, 2018 15 1500000MN
May 31, 2018 15 1500000MN
Apr 30, 2018 15 1500000MN
Mar 31, 2018 15 1500000MN
Feb 28, 2018 15 1500000MN
Jan 31, 2018 15 1500000MN
Dec 31, 2017 15 1500000MN
Nov 30, 2017 15 1500000MN
Oct 31, 2017 15 1500000MN
Sep 30, 2017 15 1500000MN
Aug 31, 2017 15 1500000MN
Jul 31, 2017 15 1500000MN
Jun 30, 2017 15 1500000MN
May 31, 2017 15 1500000MN
Apr 30, 2017 15 1500000MN
Mar 31, 2017 15 1500000MN
Feb 28, 2017 15 1500000MN
Jan 31, 2017 15 1500000MN
Dec 31, 2016 15 1500000MN
Nov 30, 2016 15 1500000MN
Oct 31, 2016 15 1500000MN
Sep 30, 2016 15 1500000MN
Aug 31, 2016 15 1500000MN
Jul 31, 2016 15 1500000MN
Jun 30, 2016 15 1500000MN
May 31, 2016 15 1500000MN
Apr 30, 2016 15 1500000MN
Mar 31, 2016 15 1500000MN
Feb 29, 2016 15 1500000MN
Jan 31, 2016 15 1500000MN
Dec 31, 2015 15 1500000MN
Nov 30, 2015 15 1500000MN
Oct 31, 2015 15 1500000MN
Sep 30, 2015 15 1500000MN
Aug 31, 2015 15 1500000MN
Jul 31, 2015 15 1500000MN
Jun 30, 2015 15 1510300MN
May 31, 2015 15 1500000MN
Apr 30, 2015 15 1500000MN
Mar 31, 2015 15 1500000MN
Feb 28, 2015 15 1500000MN
Jan 31, 2015 15 1500000MN
Dec 31, 2014 15 1500000MN
Nov 30, 2014 15 1500000MN
Oct 31, 2014 15 1500000MN
Sep 30, 2014 15 1500000MN
Aug 31, 2014 15 1500000MN
Jul 31, 2014 10 1500000MN
Jun 30, 2014 10 1000000MN
May 31, 2014 10 1000000MN
Apr 30, 2014 10 1000000MN
Mar 31, 2014 10 1000000MN
Feb 28, 2014 10 1000000MN
Jan 31, 2014 10 1000000MN
Dec 31, 2013 10 1000000MN
Nov 30, 2013 10 1000000MN
Oct 31, 2013 10 1000000MN
Sep 30, 2013 10 1000000MN
Aug 31, 2013 10 1000000MN
Jul 31, 2013 10 1010300MN
Jun 30, 2013 10 1000000MN
May 31, 2013 10 1000000MN
Apr 30, 2013 10 1000000MN
Mar 31, 2013 10 1000000MN
Feb 28, 2013 10 1000000MN
Jan 31, 2013 10 1000000MN
Dec 31, 2012 10 1000000MN
Nov 30, 2012 10 1000000MN
Oct 31, 2012 10 1000000MN
Sep 30, 2012 10 1000000MN
Aug 31, 2012 10 1000000MN
Jul 31, 2012 10 1000000MN
Jun 30, 2012 10 1000000MN
May 31, 2012 10 1000000MN
Apr 30, 2012 10 1000000MN
Mar 31, 2012 10 1000000MN
Feb 29, 2012 10 1000000MN
Jan 31, 2012 10 1000000MN
Dec 31, 2011 10 1200000MN
Nov 30, 2011 10 1000000MN
Oct 31, 2011 10 1100000MN
Sep 30, 2011 10 1200000MN
Aug 31, 2011 10 1200000MN
Jul 31, 2011 10 1200000MN
Jun 30, 2011 10 1200000MN
May 31, 2011 10 1200000MN
Apr 30, 2011 10 1200000MN
Mar 31, 2011 10 1200000MN
Feb 28, 2011 10 1200000MN
Jan 31, 2011 10 1200000MN
Dec 31, 2010 10 1200000MN
Nov 30, 2010 10 1200000MN
Oct 31, 2010 10 1200000MN
Sep 30, 2010 10 1200000MN
Aug 31, 2010 10 1300000MN
Jul 31, 2010 10 1200000MN
Jun 30, 2010 10 1200000MN
May 31, 2010 10 1200000MN
Apr 30, 2010 10 1200000MN
Mar 31, 2010 10 1200000MN
Feb 28, 2010 10 1200000MN
Jan 31, 2010 10 1200000MN
Dec 31, 2009 10 1200000MN
Nov 30, 2009 10 1100000MN
Oct 31, 2009 10 1200000MN
Sep 30, 2009 10 1200000MN
Aug 31, 2009 10 1200000MN
Jul 31, 2009 10 1200000MN
Jun 30, 2009 10 1200000MN
May 31, 2009 10 1200000MN
Apr 30, 2009 10 1200000MN
Mar 31, 2009 10 1600000MN
Feb 28, 2009 10 1200000MN
Jan 31, 2009 10 1200000MN
Dec 31, 2008 10 1200000MN
Nov 30, 2008 10 1200000MN
Oct 31, 2008 10 1200000MN
Sep 30, 2008 10 1200000MN
Aug 31, 2008 10 1210300MN
Jul 31, 2008 10 1200000MN
Jun 30, 2008 10 1200000MN
May 31, 2008 10 1200000MN
Apr 30, 2008 10 1600000MN
Mar 31, 2008 10 1200000MN
Feb 29, 2008 10 1200000MN
Jan 31, 2008 10 1200000MN
Dec 31, 2007 10 1200000MN
Nov 30, 2007 10 1200000MN
Oct 31, 2007 10 1200000MN
Sep 30, 2007 10 1200000MN
Aug 31, 2007 10 1200000MN
Jul 31, 2007 10 1200000MN
Jun 30, 2007 10 1100000MN
May 31, 2007 10 1200000MN
Apr 30, 2007 10 1200000MN
Mar 31, 2007 10 1200000MN
Feb 28, 2007 10 1200000MN
Jan 31, 2007 10 1200000MN
Dec 31, 2006 10 1200000MN
Nov 30, 2006 10 1200000MN
Oct 31, 2006 10 1200000MN
Sep 30, 2006 10 1200000MN
Aug 31, 2006 10 1200000MN
Jul 31, 2006 10 1200000MN
Jun 30, 2006 10 1200000MN
May 31, 2006 10 1200000MN
Apr 30, 2006 10 1200000MN
Mar 31, 2006 10 1200000MN
Feb 28, 2006 10 1200000MN
Jan 31, 2006 10 1200000MN
Dec 31, 2005 10 1200000MN
Nov 30, 2005 10 1200000MN
Oct 31, 2005 10 1200000MN
Sep 30, 2005 10 1200000MN
Aug 31, 2005 10 1200000MN
Jul 31, 2005 10 1200000MN
Jun 30, 2005 10 1300000MN
May 31, 2005 10 1200000MN
Apr 30, 2005 10 1200000MN
Mar 31, 2005 10 1200000MN
Feb 28, 2005 10 1200000MN
Jan 31, 2005 10 1200000MN
Dec 31, 2004 10 1200000MN
Nov 30, 2004 10 1200000MN
Oct 31, 2004 10 1200000MN
Sep 30, 2004 10 1200000MN
Aug 31, 2004 10 1200000MN
Jul 31, 2004 10 1200000MN
Jun 30, 2004 10 1200000MN
May 31, 2004 10 1200000MN
Apr 30, 2004 10 1200000MN
Mar 31, 2004 10 1200000MN
Feb 29, 2004 10 1200000MN
Jan 31, 2004 10 1200000MN
Dec 31, 2003 10 1200000MN
Nov 30, 2003 10 1200000MN
Oct 31, 2003 10 1600000MN
Sep 30, 2003 10 1200000MN
Aug 31, 2003 10 1200000MN
Jul 31, 2003 10 1500000MN
Jun 30, 2003 10 1200000MN
May 31, 2003 10 1200000MN
Apr 30, 2003 10 1200000MN
Mar 31, 2003 10 1200000MN
Feb 28, 2003 10 1200000MN
Jan 31, 2003 10 1200000MN
Dec 31, 2002 10 1200000MN
Nov 30, 2002 10 1200000MN
Oct 31, 2002 10 1200000MN
Sep 30, 2002 10 1510300MN
Aug 31, 2002 10 1200000MN
Jul 31, 2002 10 1200000MN
Jun 30, 2002 10 1200000MN
May 31, 2002 10 1200000MN
Apr 30, 2002 10 1200000MN
Mar 31, 2002 10 1200000MN
Feb 28, 2002 10 1200000MN
Jan 31, 2002 10 2800000MN
Exclude results older than 2021


More information for this water system: SDWIS ID 3898
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