York Region Public Health completed the Radon – Test Your Home study in 2018. The purpose of the study was to assess York Region residents’ awareness of radon and to measure radon levels in approximately 500 York Region homes. Overall, radon levels observed in York Region were relatively low. Almost all homes were below the Health Canada guideline of 200 Bq/m3.
The Radon Study Summary Report which is also available on york.ca/radon