https://windsorstar.com/opinion/letters/guest-column-introduction-of-ozone-into-windsors-drinking-water-a-noteworthy-event-to-remember
Guest column: Introduction of ozone into Windsor's drinking water, a noteworthy event to celebrate | Windsor Star
This June 15 will be the 20th anniversary for the implementation of ozone as primary disinfectant for drinking water provided for residents of city of Windsor