Does Williams Sonoma pizza stones & baking surfaces have PFAS?
We graded 9 Williams Sonoma pizza stones & baking surfaces products, averaging Good (61/100). 1 of them grades Good or better. Against the other 37 pizza stones & baking surfaces brands we grade, where the middle brand sits at 65/100, Williams Sonoma is worse than typical, scoring above 14% of them.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Williams Sonoma pizza stones & baking surfaces worth buying Good or better, best-graded first
Williams Sonoma
Pizza Steel
Carbon steel, uncoated
Iron leaching
Bare carbon steel can release small amounts of iron into acidic or very wet foods…
Rust and corrosion
Improper drying or storage in humid conditions can lead to surface rust, which is…
Heavy metals
Carbon steel sourcing and purity are not disclosed by Williams Sonoma. Reputable steel…
Lower PFAS concern, bare carbon steel requires no chemical coatings.
⚠Starting grade for this product type
Graded and flagged Poor and Bad, we’d swap these
Williams Sonoma
Round Pizza Stone
ceramic or stoneware (pizza stone)
Thermal shock and structural failure
Ceramic and stoneware pizza stones are brittle and can crack or develop internal stress…
Lower PFAS concern, traditional pizza stone material carries minimal risk.
⚠Starting grade for this product type
Williams Sonoma
Square Pizza Stone, Tan/Natural
Ceramic or stoneware (unglazed clay base, natural mineral composition)
Thermal shock and structural failure
Ceramic and stoneware are brittle materials prone to cracking if exposed to rapid…
Porous surface harboring bacterial contamination if improperly maintained
Unglazed clay is porous and can absorb moisture and food residue if not dried completely…
Lower concern. Unglazed ceramic or stoneware base material is not linked to PFAS.
⚠Starting grade for this product type
Williams Sonoma
Pizza Peel and Lava Stone Set of 2
ceramic lava stone; wooden pizza peel
Thermal shock and stone fracture
Lava stone is porous and prone to cracking if moved directly from room temperature to a…
Wood contamination (mold, bacterial growth if wet-stored)
Wooden peels retain moisture in joints and grain if not dried thoroughly or stored in…
Lower PFAS concern, traditional stone and wood materials carry minimal fluorochemical risk.
⚠Starting grade for this product type
Williams Sonoma
Stainless-Steel Outdoor Pizza Pan
Stainless steel
Thermal damage or warping
Stainless steel can warp under extreme or uneven outdoor heating, particularly at thinner…
Surface corrosion and pitting
Outdoor stainless steel can develop surface corrosion or pitting if exposed to salt…
Lower-concern cookware; stainless steel is not associated with PFAS without explicit brand disclosure.
⚠Starting grade for this product type
Williams Sonoma
Square Pizza Stone
Cordierite ceramic stone
Thermal fracturing and microcracking
Cordierite stones can develop hairline cracks with thermal shock or age, creating sites…
Bacterial colonization in pores
Unglazed cordierite is porous and can trap moisture and food particles if not cleaned and…
Lower-concern choice; ceramic pizza stones avoid Teflon-type coating and Teflon-family coating coatings entirely.
⚠Starting grade for this product type
Williams Sonoma
Emile Henry French Ceramic Pizza Stone
Glazed ceramic (Emile Henry brand)
Glaze degradation and ceramic dust release
Repeated thermal stress, thermal shock, or mechanical damage can cause glaze crazing or…
Microcracking and thermal fracture
User reports and product reviews commonly mention cracking or breaking of ceramic pizza…
Bacterial or mold growth if not dried thoroughly
Porous ceramic bodies can retain moisture in crevices or the underside if not fully…
Lower PFAS concern, uncoated ceramic pizza stone with no nonstick or water-resistance treatments.
⚠Starting grade for this product type
Williams Sonoma
OPEN BOX Emile Henry French Ceramic Pizza Stone
Ceramic (Emile Henry stoneware)
Glaze degradation and crazing over time
Thermal cycling and rapid temperature changes can cause fine cracks in the glaze, which…
Microbial growth in porous material
Unglazed or cracked areas of ceramic can trap moisture and food particles, creating…
Lower PFAS concern. Material as recorded is not linked to PFAS.
⚠Starting grade for this product type
Williams Sonoma
Goldtouch Pro Pizza Pan
Carbon steel with proprietary nonstick coating (unspecified composition)
Teflon-type coating fume risk and thermal degradation
If the coating contains Teflon-type coating or other Teflon-family coating, heating above…
Coating degradation and microflaking
All nonstick coatings degrade with use, especially under metal utensils or high heat.…
PFAS
Carbon steel nonstick coatings are frequently formulated with Teflon-family coating…
Skip until Williams Sonoma reveals coating chemistry or obtains independent verification.
⚠Nonstick, coating undisclosed
Better pizza stones & baking surfaces from other brands
Graded higher than the Williams Sonoma average of 61.
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
Ceramic (clay-based baking stone)
Glaze degradation and surface leaching
Limited concern
Thermal stress fracture
High concern
Microporosity and microbial retention
Limited concern
Brand PFAS statement on record, which we have not verified.
⚠Starting grade for this product type
Deluxe Square Pizza Stone with Rack
ceramic or unglazed stone; no nonstick coating
Ceramic or stone cracking and fragmentation
Limited concern
Porous surface harboring bacterial or mold growth
Limited concern
Brand PFAS statement on record, which we have not verified.
⚠Starting grade for this product type
Baking Steel
The Original Ultra Conductive Pizza Stone
carbon steel (bare metal, no coating)
Rust and corrosion
Limited concern
Thermal safety and burns
Moderate concern
Lower concern; bare carbon steel has no PFAS-prone coatings.
⚠Starting grade for this product type
See every Williams Sonoma product we grade on the Williams Sonoma brand page, or the full pizza stones & baking surfaces ranking.