LETTER: Radon is Alberta's hidden health crisis

An update to the province's building code would be a simple, practical step to protect families for generations. Dear Editor, Most of us think of home as the safest place in our lives. It's where we raise our families, sleep, breathe, and spend more time than anywhere else. But there's a danger inside thousands of Alberta homes that can't be seen, smelled, or tasted, and it quietly causes more death than house fires, carbon monoxide, and floods combined. That danger is radon, a naturally occurring radioactive gas that seeps into homes from the ground. Health Canada identifies it as the second-leading cause of lung cancer, responsible for 3,200 Canadian deaths every year. It's a slow, silent killer, and Alberta happens to be sitting on one of the largest concentrations of it anywhere in the world. Recent studies paint a stark picture. In southern Alberta, 47.6 per cent of tested homes recorded radon levels above the threshold where international health agencies begin to see increased cancer risk. Surprisingly, the homes at the greatest risk aren't the old, drafty ones. Research published in the Canadian Medical Association Journal found that Alberta homes built 1992 or later had radon levels 31.5 per cent higher than older construction. The reason is simple: modern homes are more airtight. That's great for energy efficiency but terrible when the soil beneath them emits radioactive gas. Once radon enters a tightly sealed house, it stays there accumulating day after day, year after year. Despite the severity of the problem, Alberta's building code still requires only a basic radon rough-in: essentially a capped pipe under the basement floor that does nothing to reduce radon unless a homeowner pays thousands to convert it to an actual mitigation system. The result is predictable: Most people never test their home, let alone complete the system. Families end up living with unnecessary cancer exposure for years before discovering it, often by accident. Other provinces have realized rough-ins aren't enough. B.C.'s building code now requires a full passive radon mitigation system in every new home. Quebec has taken an even stronger approach: mandatory radon testing after construction and required installation of a full active mitigation system (with a fan) when levels exceed guidelines. Alberta, by contrast, is one of the highest-risk provinces with one of the weakest standards. What makes this particularly frustrating is that radon mitigation is one of the simplest and cheapest health protections we could require. When installed during construction, an effective passive system costs roughly the same as a kitchen appliance upgrade. When required to activate, an active fan system can reduce radon levels by 90 per cent or more for a cost comparable to fixing a furnace or air conditioner. These systems are proven, low-maintenance, and effective for decades. If we're willing to require smoke alarms, carbon monoxide detectors, GFCI outlets, fire-rated drywall, and seismic bracing – all essential measures to protect families from hazards that may never occur – then protecting Albertans from a known, measurable, and statistically deadly carcinogen should be no different. We already accept that the building code's purpose is to prevent harm before it happens. Radon deserves a place alongside every other mandatory safety requirement. Alberta doesn't need to reinvent the wheel. The solutions are already in place elsewhere in Canada. A reasonable, life-saving update to the building code could include: • A province-wide passive radon mitigation system in all new homes. • Mandatory testing within the first heating season. • Required upgrade to an active system if levels exceed 100–200 Bq/m³. • Certification to ensure systems are properly installed and sealed. The human cost of inaction is clear: more preventable lung cancer, more suffering, and more families blindsided by a danger they never knew existed. Radon shouldn't be an afterthought in Alberta. It should be treated as a serious, fixable public health issue. And the most effective place to fix it is during construction, when a few hundred dollars can save lives and prevent thousands in future medical costs. Home should be the safest place we know. Updating Alberta's building code to require meaningful radon mitigation is a simple, practical step that would protect families for generations. It's time we took it. Ed Buckle Okotoks