OHA Drinking Water Services
OR41
PWS ID: 00932 ---- WARRENTON, 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
Jun 30, 2024 10 000000MN
May 31, 2024 10 1000000MN
Apr 30, 2024 10 1000000MN
Mar 31, 2024 10 1000000MN
Feb 29, 2024 10 1000000MN
Jan 31, 2024 10 1000000MN
Dec 31, 2023 10 1000000MN
Nov 30, 2023 10 1000000MN
Oct 31, 2023 10 1000000MN
Sep 30, 2023 10 1000000MN
Aug 31, 2023 10 1000000MN
Jul 31, 2023 10 1000000MN
Jun 30, 2023 10 1000000MN
May 31, 2023 10 1000000MN
Apr 30, 2023 10 1000000MN
Mar 31, 2023 10 1000000MN
Feb 28, 2023 10 1000000MN
Jan 31, 2023 10 1000000MN
Dec 31, 2022 10 1000000MN
Nov 30, 2022 10 1000000MN
Oct 31, 2022 10 1000000MN
Sep 30, 2022 10 1000000MN
Aug 31, 2022 10 1000000MN
Jul 31, 2022 10 1000000MN
Jun 30, 2022 10 1000000MN
May 31, 2022 10 1000000MN
Apr 30, 2022 10 1000000MN
Mar 31, 2022 10 1000000MN
Feb 28, 2022 10 1000000MN
Jan 31, 2022 10 1000000MN
Dec 31, 2021 10 1000000MN
Nov 30, 2021 10 1000000MN
Oct 31, 2021 10 1000000MN
Sep 30, 2021 10 1000000MN
Aug 31, 2021 10 1000000MN
Jul 31, 2021 10 1000000MN
Jun 30, 2021 10 1000000MN
May 31, 2021 10 1000000MN
Apr 30, 2021 10 1000000MN
Mar 31, 2021 10 1000000MN
Feb 28, 2021 10 1000000MN
Jan 31, 2021 10 1000000MN
Dec 31, 2020 10 1000000MN
Nov 30, 2020 10 1000000MN
Oct 31, 2020 10 1000000MN
Sep 30, 2020 10 1000000MN
Aug 31, 2020 10 1000000MN
Jul 31, 2020 10 1000000MN
Jun 30, 2020 10 1000000MN
May 31, 2020 10 1000000MN
Apr 30, 2020 10 1000000MN
Mar 31, 2020 10 1000000MN
Feb 29, 2020 10 1000000MN
Jan 31, 2020 10 1000000MN
Dec 31, 2019 10 1000000MN
Nov 30, 2019 10 1000000MN
Oct 31, 2019 10 1000000MN
Sep 30, 2019 10 1000000MN
Aug 31, 2019 10 1020910MN
Jul 31, 2019 10 1000000MN
Jun 30, 2019 10 1000000MN
May 31, 2019 10 1000000MN
Apr 30, 2019 10 1000000MN
Mar 31, 2019 10 1000000MN
Feb 28, 2019 10 1000000MN
Jan 31, 2019 10 1000000MN
Dec 31, 2018 10 1000000MN
Nov 30, 2018 10 1000000MN
Oct 31, 2018 10 1000000MN
Sep 30, 2018 10 1000000MN
Aug 31, 2018 10 1000000MN
Jul 31, 2018 10 1000000MN
Jun 30, 2018 10 1000000MN
May 31, 2018 10 1000000MN
Apr 30, 2018 10 1000000MN
Mar 31, 2018 10 1000000MN
Feb 28, 2018 10 1000000MN
Jan 31, 2018 10 1000000MN
Dec 31, 2017 10 1000000MN
Nov 30, 2017 10 1000000MN
Oct 31, 2017 10 1000000MN
Sep 30, 2017 10 1000000MN
Aug 31, 2017 10 1000000MN
Jul 31, 2017 10 1000000MN
Jun 30, 2017 10 1000000MN
May 31, 2017 10 1000000MN
Apr 30, 2017 10 1000000MN
Mar 31, 2017 10 1000000MN
Feb 28, 2017 10 1000000MN
Jan 31, 2017 10 1000000MN
Dec 31, 2016 10 1000000MN
Nov 30, 2016 10 1000000MN
Oct 31, 2016 10 1000000MN
Sep 30, 2016 10 1000000MN
Aug 31, 2016 10 1000000MN
Jul 31, 2016 10 1000000MN
Jun 30, 2016 10 1000000MN
May 31, 2016 10 1000000MN
Apr 30, 2016 10 1000000MN
Mar 31, 2016 10 1000000MN
Feb 29, 2016 10 1000000MN
Jan 31, 2016 10 1000000MN
Dec 31, 2015 10 1000000MN
Nov 30, 2015 10 1000000MN
Oct 31, 2015 10 1000000MN
Sep 30, 2015 10 1000000MN
Aug 31, 2015 10 1000000MN
Jul 31, 2015 10 1000000MN
Jun 30, 2015 10 1000000MN
May 31, 2015 10 1000000MN
Apr 30, 2015 10 1000000MN
Mar 31, 2015 10 1000000MN
Feb 28, 2015 10 1010300MN
Jan 31, 2015 10 1000000MN
Dec 31, 2014 10 1000000MN
Nov 30, 2014 10 1000000MN
Oct 31, 2014 10 1000000MN
Sep 30, 2014 10 1000000MN
Aug 31, 2014 10 1000000MN
Jul 31, 2014 10 1000000MN
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 1000000MN
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 1100000MN
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 1000000MN
Nov 30, 2011 10 1000000MN
Oct 31, 2011 10 1000000MN
Sep 30, 2011 10 1000000MN
Aug 31, 2011 10 1000000MN
Jul 31, 2011 10 1000000MN
Jun 30, 2011 10 1000000MN
May 31, 2011 10 1000000MN
Apr 30, 2011 10 1000000MN
Mar 31, 2011 10 1000000MN
Feb 28, 2011 10 1000000MN
Jan 31, 2011 10 1000000MN
Dec 31, 2010 10 1000000MN
Nov 30, 2010 10 1000000MN
Oct 31, 2010 10 1000000MN
Sep 30, 2010 10 1000000MN
Aug 31, 2010 10 1000000MN
Jul 31, 2010 10 1000000MN
Jun 30, 2010 10 1000000MN
May 31, 2010 10 1000000MN
Apr 30, 2010 10 1000000MN
Mar 31, 2010 10 1000000MN
Feb 28, 2010 10 1000000MN
Jan 31, 2010 10 1000000MN
Dec 31, 2009 10 1000000MN
Nov 30, 2009 10 1000000MN
Oct 31, 2009 10 1000000MN
Sep 30, 2009 10 1000000MN
Aug 31, 2009 10 1100000MN
Jul 31, 2009 10 1100000MN
Jun 30, 2009 10 1000000MN
May 31, 2009 10 1000000MN
Apr 30, 2009 10 1000000MN
Mar 31, 2009 10 1000000MN
Feb 28, 2009 10 1000000MN
Jan 31, 2009 10 1000000MN
Dec 31, 2008 10 1000000MN
Nov 30, 2008 10 1000000MN
Oct 31, 2008 10 1000000MN
Sep 30, 2008 10 1000000MN
Aug 31, 2008 10 1000000MN
Jul 31, 2008 10 1000000MN
Jun 30, 2008 10 1000000MN
May 31, 2008 10 1010300MN
Apr 30, 2008 10 1000000MN
Mar 31, 2008 10 1500000MN
Feb 29, 2008 10 1000000MN
Jan 31, 2008 10 1000000MN
Dec 31, 2007 10 1000000MN
Nov 30, 2007 10 1000000MN
Oct 31, 2007 10 1000000MN
Sep 30, 2007 10 1000000MN
Aug 31, 2007 10 1000000MN
Jul 31, 2007 10 1000000MN
Jun 30, 2007 10 1100000MN
May 31, 2007 10 1000000MN
Apr 30, 2007 10 1000000MN
Mar 31, 2007 10 1000000MN
Feb 28, 2007 10 1000000MN
Jan 31, 2007 10 1000000MN
Dec 31, 2006 10 500000MN
Nov 30, 2006 10 1000000MN
Oct 31, 2006 10 500000MN
Sep 30, 2006 10 1000000MN
Aug 31, 2006 10 1000000MN
Jul 31, 2006 10 1000000MN
Jun 30, 2006 10 1000000MN
May 31, 2006 10 1000000MN
Apr 30, 2006 10 1000000MN
Mar 31, 2006 10 1000000MN
Feb 28, 2006 10 1100000MN
Jan 31, 2006 10 500000MN
Dec 31, 2005 10 1000000MN
Nov 30, 2005 10 1000000MN
Oct 31, 2005 10 1000000MN
Sep 30, 2005 10 1000000MN
Aug 31, 2005 10 1000000MN
Jul 31, 2005 10 1000000MN
Jun 30, 2005 10 1000000MN
May 31, 2005 10 1000000MN
Apr 30, 2005 10 1000000MN
Mar 31, 2005 10 1000000MN
Feb 28, 2005 10 1000000MN
Jan 31, 2005 10 1100000MN
Dec 31, 2004 10 1000000MN
Nov 30, 2004 10 1000000MN
Oct 31, 2004 10 1000000MN
Sep 30, 2004 10 1000000MN
Aug 31, 2004 10 1000000MN
Jul 31, 2004 10 1000000MN
Jun 30, 2004 10 1000000MN
May 31, 2004 10 1000000MN
Apr 30, 2004 10 1000000MN
Mar 31, 2004 10 1000000MN
Feb 29, 2004 10 1000000MN
Jan 31, 2004 10 1000000MN
Dec 31, 2003 10 1000000MN
Nov 30, 2003 10 1000000MN
Oct 31, 2003 10 1000000MN
Sep 30, 2003 10 1000000MN
Aug 31, 2003 10 1000000MN
Jul 31, 2003 10 1000000MN
Jun 30, 2003 10 1000000MN
May 31, 2003 10 1000000MN
Apr 30, 2003 10 1000000MN
Mar 31, 2003 10 1000000MN
Feb 28, 2003 10 1000000MN
Jan 31, 2003 10 1000000MN
Dec 31, 2002 10 1000000MN
Nov 30, 2002 10 1000000MN
Oct 31, 2002 10 1000000MN
Sep 30, 2002 10 1000000MN
Aug 31, 2002 10 1000000MN
Jul 31, 2002 10 1000000MN
Jun 30, 2002 10 1000000MN
May 31, 2002 10 1000000MN
Apr 30, 2002 10 1000000MN
Mar 31, 2002 10 1000000MN
Feb 28, 2002 10 1000000MN
Jan 31, 2002 10 1000000MN
Exclude results older than 2021


More information for this water system: SDWIS ID 3918
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA
Corrosion Control has moved to the Lead & Copper page.

Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List

Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules

Need help? Email Drinking Water Services for assistance.Staff/Partner Login