
California Prepares to Ban Quartz Countertops as Silicosis Crisis Deepens
California is set to become the first US state to ban the manufacturing and installation of engineered stone countertops containing more than 1% crystalline silica. This emergency regulation, expected to pass in October 2026, responds to a severe occupational health crisis. Since 2019, the state has recorded 662 silicosis cases among stone workers, including 35 deaths and 75 lung transplants. The move mirrors Australia’s 2024 nationwide ban, which successfully reduced risk without significant job losses.













