Is Radon High in Calgary?

It's geology, not bad luck. Calgary sits on uranium-bearing bedrock and glacial deposits that release radon gas. University of Calgary researchers testing thousands of homes found roughly 1 in 6 Calgary properties exceeds Health Canada's 200 Bq/m³ action level — among the highest rates measured in Canada.

Why new homes aren't safe either

Modern airtight construction traps radon better than drafty old houses. Alberta made radon rough-ins mandatory in new construction in 2015 — which tells you the building code takes this seriously.

Neighbourhood patterns

Levels vary street by street with soil and bedrock — but elevated readings show up across the city, from established communities like Citadel to newer ones like Mahogany and Aspen Woods. The only way to know your home's number is to test.