OHA Drinking Water Services
OR41
PWS ID: 01513 ---- HILLSBORO, 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 2022
Period End Date Routines Required Routines Reported Routine TC+ Routine EC+ Repeats Reported Repeat TC+ Repeat EC+ Period Type
Jan 31, 2025 90 7400000MN
Dec 31, 2024 90 9900000MN
Nov 30, 2024 90 9900000MN
Oct 31, 2024 90 10000000MN
Sep 30, 2024 90 10000000MN
Aug 31, 2024 90 10000000MN
Jul 31, 2024 90 10000000MN
Jun 30, 2024 90 10000000MN
May 31, 2024 90 10000000MN
Apr 30, 2024 90 10000000MN
Mar 31, 2024 90 10000000MN
Feb 29, 2024 90 9900000MN
Jan 31, 2024 90 9700000MN
Dec 31, 2023 90 9800000MN
Nov 30, 2023 90 9910300MN
Oct 31, 2023 90 10000000MN
Sep 30, 2023 90 9900000MN
Aug 31, 2023 90 10010300MN
Jul 31, 2023 90 9900000MN
Jun 30, 2023 90 10000000MN
May 31, 2023 90 10000000MN
Apr 30, 2023 90 10000000MN
Mar 31, 2023 90 10000000MN
Feb 28, 2023 90 10000000MN
Jan 31, 2023 90 9900000MN
Dec 31, 2022 90 9900000MN
Nov 30, 2022 90 10000000MN
Oct 31, 2022 90 10010300MN
Sep 30, 2022 90 9900000MN
Aug 31, 2022 90 10000000MN
Jul 31, 2022 90 10000000MN
Jun 30, 2022 90 10000000MN
May 31, 2022 90 10000000MN
Apr 30, 2022 90 10000000MN
Mar 31, 2022 90 10000000MN
Feb 28, 2022 90 10000000MN
Jan 31, 2022 90 10010300MN
Dec 31, 2021 90 9800000MN
Nov 30, 2021 90 10000000MN
Oct 31, 2021 90 10000000MN
Sep 30, 2021 90 9900000MN
Aug 31, 2021 90 9910300MN
Jul 31, 2021 90 9900000MN
Jun 30, 2021 90 9900000MN
May 31, 2021 90 10000000MN
Apr 30, 2021 90 10000000MN
Mar 31, 2021 90 10000000MN
Feb 28, 2021 90 10000000MN
Jan 31, 2021 90 10000000MN
Dec 31, 2020 90 9800000MN
Nov 30, 2020 90 9700000MN
Oct 31, 2020 90 10000000MN
Sep 30, 2020 90 9900000MN
Aug 31, 2020 90 9700000MN
Jul 31, 2020 90 10000000MN
Jun 30, 2020 90 10000000MN
May 31, 2020 90 9800000MN
Apr 30, 2020 90 9900000MN
Mar 31, 2020 90 10000000MN
Feb 29, 2020 90 10000000MN
Jan 31, 2020 90 10000000MN
Dec 31, 2019 90 9800000MN
Nov 30, 2019 90 9900000MN
Oct 31, 2019 90 9800000MN
Sep 30, 2019 90 9700000MN
Aug 31, 2019 90 9900000MN
Jul 31, 2019 90 10000000MN
Jun 30, 2019 90 10000000MN
May 31, 2019 90 9800000MN
Apr 30, 2019 90 9900000MN
Mar 31, 2019 90 9900000MN
Feb 28, 2019 90 10000000MN
Jan 31, 2019 90 10000000MN
Dec 31, 2018 90 9900000MN
Nov 30, 2018 90 9900000MN
Oct 31, 2018 90 10000000MN
Sep 30, 2018 90 10000000MN
Aug 31, 2018 90 10000000MN
Jul 31, 2018 90 10000000MN
Jun 30, 2018 90 10000000MN
May 31, 2018 90 10300000MN
Apr 30, 2018 90 9800000MN
Mar 31, 2018 90 10000000MN
Feb 28, 2018 90 9900000MN
Jan 31, 2018 90 9900000MN
Dec 31, 2017 90 9600000MN
Nov 30, 2017 90 9900000MN
Oct 31, 2017 90 9800000MN
Sep 30, 2017 90 10000000MN
Aug 31, 2017 90 9900000MN
Jul 31, 2017 90 9900000MN
Jun 30, 2017 90 9700000MN
May 31, 2017 90 10000000MN
Apr 30, 2017 90 9900000MN
Mar 31, 2017 90 9700000MN
Feb 28, 2017 90 9600000MN
Jan 31, 2017 90 9400000MN
Dec 31, 2016 90 10000000MN
Nov 30, 2016 90 9900000MN
Oct 31, 2016 90 9900000MN
Sep 30, 2016 90 9900000MN
Aug 31, 2016 90 11900000MN
Jul 31, 2016 80 9900000MN
Jun 30, 2016 80 9000000MN
May 31, 2016 80 11500000MN
Apr 30, 2016 80 9200000MN
Mar 31, 2016 80 11200000MN
Feb 29, 2016 80 9000000MN
Jan 31, 2016 80 9200000MN
Dec 31, 2015 80 8700000MN
Nov 30, 2015 80 8800000MN
Oct 31, 2015 80 9200000MN
Sep 30, 2015 80 10100000MN
Aug 31, 2015 80 9200000MN
Jul 31, 2015 80 9100000MN
Jun 30, 2015 80 11410300MN
May 31, 2015 80 9000000MN
Apr 30, 2015 80 9100000MN
Mar 31, 2015 80 9200000MN
Feb 28, 2015 80 9100000MN
Jan 31, 2015 80 8600000MN
Dec 31, 2014 80 8800000MN
Nov 30, 2014 80 8700000MN
Oct 31, 2014 80 9200000MN
Sep 30, 2014 70 9100000MN
Aug 31, 2014 70 7910300MN
Jul 31, 2014 70 7900000MN
Jun 30, 2014 70 7600000MN
May 31, 2014 70 7900000MN
Apr 30, 2014 70 8000000MN
Mar 31, 2014 70 8000000MN
Feb 28, 2014 70 7800000MN
Jan 31, 2014 70 8000000MN
Dec 31, 2013 70 7700000MN
Nov 30, 2013 70 8100000MN
Oct 31, 2013 70 9300000MN
Sep 30, 2013 70 7800000MN
Aug 31, 2013 70 7800000MN
Jul 31, 2013 70 10000000MN
Jun 30, 2013 70 7700000MN
May 31, 2013 70 7810300MN
Apr 30, 2013 70 9800000MN
Mar 31, 2013 70 7800000MN
Feb 28, 2013 70 7910300MN
Jan 31, 2013 70 7500000MN
Dec 31, 2012 70 7400000MN
Nov 30, 2012 70 7700000MN
Oct 31, 2012 70 100401200MN
Sep 30, 2012 70 8000000MN
Aug 31, 2012 70 7900000MN
Jul 31, 2012 70 7900000MN
Jun 30, 2012 70 7810300MN
May 31, 2012 70 8000000MN
Apr 30, 2012 70 8000000MN
Mar 31, 2012 70 8000000MN
Feb 29, 2012 70 7900000MN
Jan 31, 2012 70 8900000MN
Dec 31, 2011 70 8000000MN
Nov 30, 2011 70 7900000MN
Oct 31, 2011 70 8000000MN
Sep 30, 2011 70 8000000MN
Aug 31, 2011 70 10000000MN
Jul 31, 2011 70 7910300MN
Jun 30, 2011 70 8000000MN
May 31, 2011 70 9500000MN
Apr 30, 2011 70 8000000MN
Mar 31, 2011 70 8000000MN
Feb 28, 2011 70 7500000MN
Jan 31, 2011 70 10000000MN
Dec 31, 2010 70 7900000MN
Nov 30, 2010 70 9700000MN
Oct 31, 2010 70 7810300MN
Sep 30, 2010 70 8000000MN
Aug 31, 2010 70 9900000MN
Jul 31, 2010 70 8000000MN
Jun 30, 2010 70 10000000MN
May 31, 2010 70 8000000MN
Apr 30, 2010 70 6900000MN
Mar 31, 2010 70 9900000MN
Feb 28, 2010 70 7800000MN
Jan 31, 2010 70 7200000MN
Dec 31, 2009 70 9810300MN
Nov 30, 2009 70 8000000MN
Oct 31, 2009 70 8000000MN
Sep 30, 2009 70 8000000MN
Aug 31, 2009 70 8000000MN
Jul 31, 2009 70 7900000MN
Jun 30, 2009 70 10000000MN
May 31, 2009 90 9600000MN
Apr 30, 2009 90 9600000MN
Mar 31, 2009 90 11900000MN
Feb 28, 2009 90 9500000MN
Jan 31, 2009 90 9500000MN
Dec 31, 2008 90 9400000MN
Nov 30, 2008 90 9400000MN
Oct 31, 2008 90 9410300MN
Sep 30, 2008 90 9510300MN
Aug 31, 2008 90 9600000MN
Jul 31, 2008 1 12000000MN
Exclude results older than 2022

More information for this water system: SDWIS ID 5024
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  ::  DW Source Protection
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  ::  DW Source Protection
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login