California Set to Ban Quartz Countertops Over Silica Risk
California is poised to become the first US state to ban new quartz countertops containing more than 1% crystalline silica.
California is expected to pass an emergency regulation later this month banning new quartz countertops that contain more than 1% crystalline silica, according to cnet.com. If approved, California would become the first US state to implement such a ban.
The regulation targets countertops made from engineered quartz, a material that has become common in kitchens and bathrooms across the country. As of now, quartz countertops are used in every state in the US.
The global quartz market is estimated at $14.8 billion as of 2026, with California's move potentially reshaping how the material is sold and installed within the state.
A precedent abroad
California's expected action follows a similar measure overseas. In 2024, Australia's quartz ban took effect, making it the only country with such a ban, as reported by the New York Times.
Quick answers
What is California's quartz countertop ban?
It is an emergency regulation expected to pass later this month that would ban new quartz countertops containing more than 1% crystalline silica in California.
When did Australia's quartz ban take effect?
Australia's quartz ban took effect in 2024, making it the only country with such a ban.
Would California be the first US state to ban quartz countertops?
Yes. If the emergency regulation passes, California would be the first US state to implement such a ban.