Rural homes at higher radon risk near water wells

By Jean-Paul MacDonald

Researchers at the University of Calgary have discovered a critical link affecting radon gas levels in rural homes, particularly those near drilled groundwater wells. This finding sheds light on why rural communities experience higher radon concentrations compared to urban settings. The study, a collaborative effort across multiple faculties, delves into the geophysical, architectural, and property-specific factors contributing to this phenomenon.

Dr. Aaron Goodarzi, the lead investigator, highlights an intriguing aspect of rural water wells, stating, "It’s the water wells – not the water, but the wells themselves – that appear to be acting as unintended straws for radon gas deep in the ground." This insight points to the structural gaps around well pipes as a major conduit for radon gas, rather than the water content itself. Radon, a carcinogenic gas, poses significant health risks, especially as the leading cause of lung cancer among non-smokers in Canada.

Adding to this, Dr. Cathy Ryan's observation that "unintended" or "fugitive" radon gas migration could be happening alongside water wells parallels concerns previously noted with methane around oil and gas wells. This comparison emphasizes the potential dangers lurking in rural living environments and the need for meticulous inspection and remediation efforts.

To combat these risks, the study advocates for rigorous radon testing, particularly in rural areas with drilled groundwater wells. Averaging a 30% higher exposure in rural homes across Canada, this research underscores the urgency of addressing radon safety and includes contributions from the realms of medicine, science, and architecture.

The importance of integrating environmental understanding into building design is also highlighted, offering crucial insights into creating safer living spaces. Josh Taron from the School of Architecture, Planning and Landscape points out, "In order to design safe and healthy buildings, it’s imperative to understand the environment in which they exist."

Supported by the Alberta Real Estate Foundation, this study not only advances our understanding of radon exposure risks but also fuels initiatives like the Evict Radon National Study, aimed at eradicating radon from Canadian homes and enhancing lung cancer screening inclusivity.