OHA Drinking Water Services
OR41
PWS ID: 91830 ---- LONDON ELEMENTARY SD 45J3
Maximum Residual Disinfection Level (MRDL) Samples
MRDL Monitoring Requirements :: Excel Spreadsheet

Monitoring
Period
Entry
Point
Samples
Required
Samples
Collected
Period
Avg
Annual
Avg
Level
Compliance
Jan 01, 2026 DIST-A 1 1 0.42 0.5Y
Oct 01, 2025 DIST-A 1 1 0.63 0.5Y
Jul 01, 2025 DIST-A 1 1 0.53 0.5Y
Apr 01, 2025 DIST-A 1 1 0.42 0.5Y
Jan 01, 2025 DIST-A 1 1 0.51 0.5Y
Oct 01, 2024 DIST-A 1 1 0.46 0.5Y
Jul 01, 2024 DIST-A 1 1 0.57 0.6Y
Apr 01, 2024 DIST-A 1 1 0.52 0.6Y
Jan 01, 2024 DIST-A 1 1 0.51 0.5Y
Oct 01, 2023 DIST-A 1 1 0.62 0.6Y
Jul 01, 2023 DIST-A 1 1 0.6 0.8Y
Apr 01, 2023 DIST-A 1 1 0.42 0.8Y
Jan 01, 2023 DIST-A 1 1 0.88 1.0Y
Oct 01, 2022 DIST-A 1 1 1.14 0.9Y
Jul 01, 2022 DIST-A 1 1 0.92 0.7Y
Apr 01, 2022 DIST-A 1 1 1.1 0.7Y
Jan 01, 2022 DIST-A 1 1 0.41 0.5Y
Oct 01, 2021 DIST-A 1 2 0.49 0.6Y
Jul 01, 2021 DIST-A 1 1 0.74 0.5Y
Apr 01, 2021 DIST-A 1 1 0.52 0.5Y
Jan 01, 2021 DIST-A 1 1 0.48 0.4Y
Oct 01, 2020 DIST-A 1 1 0.33 0.4Y
Jul 01, 2020 DIST-A 1 1 0.58 0.6Y
Apr 01, 2020 DIST-A 1 1 0.35 0.6Y
Jan 01, 2020 DIST-A 1 1 0.45 0.6Y
Oct 01, 2019 DIST-A 1 1 0.85 0.6Y
Jul 01, 2019 DIST-A 1 1 0.57 0.6Y
Apr 01, 2019 DIST-A 1 1 0.58 0.6Y
Jan 01, 2019 DIST-A 1 1 0.36 0.5Y
Oct 01, 2018 DIST-A 1 1 0.75 0.5Y
Jul 01, 2018 DIST-A 1 1 0.61 0.4Y
Apr 01, 2018 DIST-A 1 1 0.26 0.4Y
Jan 01, 2018 DIST-A 1 1 0.39 0.5Y
Oct 01, 2017 DIST-A 1 1 0.28 0.7Y
Jul 01, 2017 DIST-A 1 1 0.63 0.8Y
Apr 01, 2017 DIST-A 1 1 0.82 0.8Y
Jan 01, 2017 DIST-A 1 1 1.1 0.7Y
Oct 01, 2016 DIST-A 1 1 0.67 0.6Y
Jul 01, 2016 DIST-A 1 1 0.75 0.6Y
Apr 01, 2016 DIST-A 1 1 0.34 0.5Y
Jan 01, 2016 DIST-A 1 1 0.56 0.5Y
Oct 01, 2015 DIST-A 1 1 0.55 0.5Y
Jul 01, 2015 DIST-A 1 1 0.42 0.5Y
Apr 01, 2015 DIST-A 1 1 0.47 0.5Y
Jan 01, 2015 DIST-A 1 1 0.55 0.6Y
Oct 01, 2014 DIST-A 5 0 0Y
Jul 01, 2014 DIST-A 1 0 0Y
Apr 01, 2014 DIST-A 1 0 0Y
Jan 01, 2014 DIST-A 1 0 0Y
Oct 01, 2013 DIST-A 5 0 0Y
Jul 01, 2013 DIST-A 5 0 0Y
Apr 01, 2013 DIST-A 1 0 0Y
Jan 01, 2013 DIST-A 1 0 0Y
Oct 01, 2012 DIST-A 1 0 0Y
Jul 01, 2012 DIST-A 1 0 0Y
Apr 01, 2012 DIST-A 1 0 0Y
Jan 01, 2012 DIST-A 1 0 0Y
Oct 01, 2011 DIST-A 1 0 0Y
Jul 01, 2011 DIST-A 1 0 0Y
Apr 01, 2011 DIST-A 1 0 0Y
Jan 01, 2011 DIST-A 1 0 0Y
Oct 01, 2010 DIST-A 1 0 0Y
Jul 01, 2010 DIST-A 1 0 0Y
Apr 01, 2010 DIST-A 1 0 0Y
Mar 01, 2010 DIST-A 5 0 0Y
Jan 01, 2010 DIST-A 5 0 0Y
Oct 01, 2009 DIST-A 1 0 0Y
Jul 01, 2009 DIST-A 1 0 0Y
Apr 01, 2009 DIST-A 1 0 0Y
Jan 01, 2009 DIST-A 1 0 0Y
Oct 01, 2008 DIST-A 1 0 0Y
Jul 01, 2008 DIST-A 1 0 0Y
Apr 01, 2008 DIST-A 1 0 0Y
Jan 01, 2008 DIST-A 1 0 0Y
Oct 01, 2007 DIST-A 1 0 0Y
Jul 01, 2007 DIST-A 1 0 0.1Y
Apr 01, 2007 DIST-A 1 0 0.1Y
Jan 01, 2007 DIST-A 1 0 0.1Y
Oct 01, 2006 DIST-A 1 1 0.11 0.1Y
Jul 01, 2006 DIST-A 1 0 0Y
Apr 01, 2006 DIST-A 1 0 0Y
Jan 01, 2006 DIST-A 1 0 0Y
Oct 01, 2005 DIST-A 1 0 0Y
Jul 01, 2005 DIST-A 1 1 0.02 0Y
Apr 01, 2005 DIST-A 1 0 0Y
Jan 01, 2005 DIST-A 1 0 0Y
Oct 01, 2004 DIST-A 1 0 0Y