Bill 497: An Act to ensure air quality

Businesses that emit significant air contaminants — such as manufacturers, industrial facilities, mining operations, and large construction firms operating in Quebec — are most directly affected. The bill signals that enterprises will face increased monitoring for compliance with air quality standards, and that future economic evaluations of projects must include direct and indirect health costs tied to air contaminant emissions. Developers and project proponents in sectors like real estate, energy, and infrastructure may face new constraints on where residences, schools, or offices can be built near high-traffic roads. While the bill itself is largely framework legislation, the five-year action plan it mandates could introduce tighter emissions limits and reporting requirements that raise compliance costs for businesses of all sizes.