Tests Find More Than 20% Lead in Moroccan Zellige Tiles Sold in the US
An American woman detected more than 20% lead in several samples of Moroccan zellige tiles sold in the United States. Her videos have reignited debate over the safety of these traditional tiles, as some products have already been recalled in France.
Chelsea Bernstein, known on Instagram as “The Lead Lady,” tested samples sold by Ann Sacks, Riad Tile, Clé Tile and Zia Tile using an X-ray fluorescence analyzer. In her video, posted in September, every test showed more than 20% lead. An investigation published on November 4 by Business of Home examines the discovery and its implications for manufacturers and interior designers.
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The American had previously found more than 100,000 parts per million, or over 10%, in Moroccan tiles tested in 2025. Her new video has received more than 40,000 likes. Among the companies concerned, Ann Sacks says it provides guidance on the appropriate uses of its products, including on walls and backsplashes. Zia Tile, for its part, says it had its tiles tested by an independent laboratory.
Lead is present, but what is the risk in a home?
Some traditional glazes contain lead oxide, which is used to help them melt and achieve particular colors. The reading from the analyzer measures the lead content of the tiles, not the amount that could become airborne or be absorbed by occupants.
Speaking to Business of Home, toxicologist Bruce Lanphear said cutting, drilling or wear can release contaminated dust. He is particularly concerned about the craftspeople who make the tiles and the professionals who install them. Isabel Arjmand, a British specialist in lead exposure, says the risk may remain low for a stable wall covering, as long as lead is not released and then ingested.
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In France, specific batches have already been recalled. On February 18, 2026, RO’MA NATURE announced the withdrawal of its “Zellige Vert Menthe n°36” range because its lead content exceeded permissible limits, according to RappelConso. “Vert d’eau” tiles distributed by Gina Creation Plus had also been recalled in December 2025: tests showed a release of 0.06 micrograms of lead per square centimeter, against a limit of 0.05.
