California targets engineered stone ban as silicosis cases surge
California is moving to ban the manufacturing and installation of engineered stone, such as quartz countertops, after a sharp rise in fatal silicosis cases among workers. The state’s Occupational Safety and Health Standards Board is expected to pass an emergency regulation in October, targeting materials with over 1% crystalline silica. This move follows a surge in cases from 31 in 2019 to 631 by mid-2026, disproportionately affecting male workers in Los Angeles County. The ban aims to prevent the inhalation of silica dust, which causes irreversible lung scarring and often requires lung transplants.
Key points
- California’s Occupational Safety and Health Standards Board is expected to pass an emergency regulation banning the creation or installation of man-made quartz in October.
- The proposed ban targets manufactured stone containing more than 1% crystalline silica, a key ingredient in quartz countertops.
- Silicosis cases in California have surged from 31 in 2019 to 631 as of mid-August 2026, according to a study cited by the California Post.
- Nearly all victims are men, with about half located in Los Angeles County and a median age of 52.
- Inhalation of silica dust causes an aggressive immune response, leading to scar tissue formation and lung failure, often requiring single or double lung transplants.
- The regulation is expected to undergo a review before becoming law, reflecting growing concern over the safety of quartz as an alternative to granite and marble.
Background
This regulatory action follows a broader trend in California of tightening safety and health standards, such as the recent legislative push to ban addictive social media features for minors. While previous archive items focused on mortgage rates and insurance premiums, this move highlights the state’s focus on occupational health crises, particularly in the construction and manufacturing sectors.
Why it matters
The ban addresses a critical public health crisis, protecting workers from a fatal and incurable disease. It also impacts the home improvement industry, potentially shifting demand away from quartz countertops and affecting supply chains. The move underscores the importance of workplace safety regulations in preventing long-term health consequences.
What to watch
The California Occupational Safety and Health Standards Board is expected to vote on the emergency regulation in October. Following the vote, the regulation will undergo a review before it becomes law. The impact on the quartz industry and worker safety will be monitored in the coming months.
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