OHA Drinking Water Services
OR41
PWS ID: 05955 ---- UPS-HERMISTON
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 2023
Period End Date Routines Required Routines Reported Routine TC+ Routine EC+ Repeats Reported Repeat TC+ Repeat EC+ Period Type
Mar 31, 2026 1 000000MN
Feb 28, 2026 1 100000MN
Jan 31, 2026 1 100000MN
Dec 31, 2025 1 100000MN
Nov 30, 2025 1 100000MN
Oct 31, 2025 1 100000MN
Sep 30, 2025 1 100000MN
Aug 31, 2025 1 100000MN
Jul 31, 2025 1 100000MN
Jun 30, 2025 1 100000MN
May 31, 2025 1 100000MN
Apr 30, 2025 1 100000MN
Mar 31, 2025 1 100000MN
Feb 28, 2025 1 110330MN
Nov 30, 2024 3 000000MN
Sep 30, 2024 1 100000QT
Jun 30, 2024 1 100000QT
Mar 31, 2024 1 100000QT
Oct 31, 2023 3 300000MN
Sep 30, 2023 1 110310QT
Jun 30, 2023 1 100000QT
Mar 31, 2023 1 100000QT
Dec 31, 2022 1 100000QT
Sep 30, 2022 1 100000QT
Jun 30, 2022 1 100000QT
Mar 31, 2022 1 100000QT
Dec 31, 2021 1 100000QT
Sep 30, 2021 1 100000QT
Jun 30, 2021 1 100000QT
Mar 31, 2021 1 100000QT
Dec 31, 2020 1 100000QT
Sep 30, 2020 1 100000QT
Jun 30, 2020 1 100000QT
Mar 31, 2020 1 100000QT
Dec 31, 2019 1 100000MN
Oct 31, 2019 3 300000MN
Sep 30, 2019 1 110300QT
Jun 30, 2019 1 100000QT
Mar 31, 2019 1 100000QT
Dec 31, 2018 1 100000QT
Sep 30, 2018 1 100000QT
Jun 30, 2018 1 100000QT
Mar 31, 2018 1 100000QT
Dec 31, 2017 1 100000QT
Sep 30, 2017 1 100000QT
Jun 30, 2017 1 100000QT
Feb 28, 2017 1 100000MN
Jan 31, 2017 1 110300MN
Dec 31, 2016 1 110330MN
Nov 30, 2016 1 110330MN
Oct 31, 2016 1 110330MN
Sep 30, 2016 1 110330MN
Aug 31, 2016 1 330000MN
Jul 31, 2016 1 220000MN
Jun 30, 2016 3 330330MN
May 31, 2016 1 110330MN
Apr 30, 2016 3 000000MN
Mar 31, 2016 1 210440QT
Dec 31, 2015 1 100000MN
Nov 30, 2015 1 000000MN
Oct 31, 2015 5 500000MN
Sep 30, 2015 1 110330MN
Aug 31, 2015 5 500000MN
Jul 31, 2015 5 550000MN
Jun 30, 2015 5 510000MN
May 31, 2015 5 550000MN
Apr 30, 2015 5 510330MN
Mar 31, 2015 1 110440QT
Dec 31, 2014 1 100000QT
Sep 30, 2014 1 100000QT
Jun 30, 2014 1 100000QT
Mar 31, 2014 1 100000QT
Dec 31, 2013 1 100000MN
Nov 30, 2013 1 000000MN
Oct 31, 2013 5 500000MN
Sep 30, 2013 1 110410QT
Jun 30, 2013 1 100000QT
Mar 31, 2013 1 100000QT
Dec 31, 2012 1 100000QT
Sep 30, 2012 1 100000QT
Jun 30, 2012 1 100000QT
Mar 31, 2012 1 100000QT
Dec 31, 2011 1 100000QT
Sep 30, 2011 1 100000QT
Jun 30, 2011 1 100000QT
Mar 31, 2011 1 100000QT
Dec 31, 2010 1 100000QT
Sep 30, 2010 1 100000QT
Jun 30, 2010 1 100000QT
Mar 31, 2010 1 100000QT
Dec 31, 2009 1 100000QT
Sep 30, 2009 1 100000QT
Jun 30, 2009 1 100000QT
Mar 31, 2009 1 100000QT
Dec 31, 2008 1 100000QT
Sep 30, 2008 1 100000QT
Jun 30, 2008 1 100000QT
Mar 31, 2008 1 100000QT
Dec 31, 2007 1 100000QT
Sep 30, 2007 1 100000QT
Jun 30, 2007 1 100000QT
Mar 31, 2007 1 100000QT
Dec 31, 2006 1 100000QT
Sep 30, 2006 1 100000QT
Jun 30, 2006 1 100000QT
Mar 31, 2006 1 100000QT
Dec 31, 2005 1 100000QT
Sep 30, 2005 1 100000QT
Jun 30, 2005 1 100000QT
Mar 31, 2005 1 100000QT
Dec 31, 2004 1 000000QT
Sep 30, 2004 1 000000QT
Jun 30, 2004 1 200000QT
Mar 31, 2004 1 100000QT
Dec 31, 2003 1 000000QT
Sep 30, 2003 1 200000QT
Jun 30, 2003 1 000000QT
Mar 31, 2003 1 200000QT
Dec 31, 2002 1 000000QT
Sep 30, 2002 1 100000QT
May 31, 2002 5 000000MN
Mar 31, 2002 1 100000QT
Exclude results older than 2023