Which Proposition 65 chemicals and exposure thresholds are most relevant for imported ceramic and glazed home decor?

Lead and cadmium leaching from glazes are the primary concerns for ceramic decor, along with phthalates and formaldehyde for certain finishes. Prop 65 sets Maximum Allowable Dose Levels (MADLs) for reproductive toxins (e.g., lead at 0.5 µg/day orally, cadmium at 4.1 µg/day orally) and No Significant Risk Levels (NSRLs) for carcinogens, and California also enforces a separate Title 17 leaching test for food-contact tableware that importers should treat as the practical benchmark.

When is a Prop 65 warning label required on imported home goods, and what exact wording should we use?

A warning is required whenever use of the product in California exposes a person to a listed chemical above the applicable safe harbor level, or when the seller cannot adequately assess that exposure. The OEHHA-approved long-form language identifies the chemical and the type of harm (e.g., 'WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov'), and a shortened 'Cancer and Reproductive Harm – www.P65Warnings.ca.gov' version is permitted on small labels, with an additional notice required at online checkout.

As the importer of record, are we liable for Prop 65 violations, and how do we manage that risk?

Yes, Prop 65 is a strict-liability statute enforced against any 'person in the course of doing business' that causes exposure in California, which typically includes the importer, distributor, and retailer, not just the overseas factory. To manage exposure, most importers require Prop 65-compliant language in purchase orders, demand independent third-party lab reports (such as California-accredited testing for leachable lead and cadmium), maintain a CEQA-style exposure assessment or rely on a safe-harbor level, and secure contractual indemnification from the supplier.

Prop 65 Warnings for Imported Home Decor

Importers selling home decor and ceramic goods into California must comply with Proposition 65, the state’s right-to-know law that requires clear warnings when products expose people to chemicals on California’s official list. For home decor, the most relevant listed chemicals are lead and cadmium, especially in ceramic glazes, painted finishes, metallic accents, and certain pigments. Compliance is built on three pillars: understanding which chemicals apply to your product, deciding whether a warning is needed, and either reformulating risky materials or providing compliant warnings before sale.

How Proposition 65 works for imported goods

Proposition 65 (officially the Safe Drinking Water and Toxic Enforcement Act of 1986) is enforced by the California Attorney General’s office, by local district and city attorneys, and by private plaintiffs. It does not ban products outright; instead, it requires businesses to provide a “clear and reasonable” warning before knowingly exposing individuals to listed chemicals, unless the exposure is below the relevant Safe Harbor threshold published by OEHHA (the Office of Environmental Health Hazard Assessment).

For an importer, this means a product does not need a Prop 65 warning if you can demonstrate that exposure to every listed chemical present is below the relevant threshold. If exposure is above the threshold — or you cannot prove otherwise — a warning is required. There is no pre-approval process; the duty sits on the business placing the product in California commerce.

Listed chemicals most relevant to home decor

California’s list contains well over 900 chemicals and is updated at least annually. For home decor and ceramics, the substances that most often trigger concern include:

Lead and lead compounds — historically present in ceramic glazes, painted decorations, metallic finishes, brass and bronze decorative items, candle wicks, and some imported painted wood or metal pieces.
Cadmium and cadmium compounds — used in some red, orange, and yellow ceramic pigments and glazes, and occasionally in metal alloys or surface coatings.
Phthalates (specifically listed types) — relevant where soft PVC, vinyl, or certain flexible plastics are present (for example, decorative lamp cords, vinyl placemats, or coated cords).
Formaldehyde — relevant for composite wood panels, pressed-wood items, and some adhesives or finishes.
Bisphenol A (BPA) — relevant for some polycarbonate plastics and epoxy-type coatings.
Listed flame retardants — relevant for upholstered furniture components, electronics, and some textiles.

Always check the current OEHHA list for the chemicals that apply to your product category.

What a compliant warning looks like

Warnings must be “clear and reasonable.” For consumer products, that generally means a warning on the product label, on the packaging, or on a shelf sign at the point of sale, plus, for internet sales, a warning on the product’s web page before purchase.

The standard product warning typically must include a warning symbol, the word “WARNING,” a statement that the product can expose the user to one or more listed chemicals (with at least one named), the cancer and/or reproductive harm language tied to that chemical, and the OEHHA website address (www.P65Warnings.ca.gov). OEHHA has also published a shorter-form warning option for consumer products, which has its own specific content rules.

For environmental exposures (for example, in a retail environment), signage requirements differ from product labeling. If you ship goods to multiple retail channels, plan for both product-level and point-of-sale signage needs.

Testing and due-diligence approach

For imported ceramics and decorated home goods, the most defensible approach is to test, not just to label. A typical path looks like:

Map materials and finishes. Identify every component that could contain a listed chemical — glazes, underglazes, lusters, metallic paints, wood stains, plastics, plated metals.
Test representative samples through an ISO 17025-accredited lab. For food-contact ceramics, leach testing simulates use; for purely decorative items, total content testing for lead and cadmium is often the practical benchmark used in enforcement actions.
Compare results to current Safe Harbor Levels published by OEHHA. If results sit above the threshold, either reformulate (for example, switch to lead-free, cadmium-reduced glazes) or commit to a warning.
Document everything. Keep test certificates, supplier declarations, and reformulation records on file. Prop 65 is enforced through litigation, and your paperwork is your main defense.
Re-test periodically when you change factory, glaze batch, or decoration technique. A passing test from one production run does not guarantee the next.

Practical checklist for importers

Identify every material and finish in each SKU that could touch a listed chemical.
Require your factory to disclose all glazes, pigments, coatings, and metal alloys used.
Pre-shipment test through an accredited lab, focusing on lead and cadmium first.
Decide per SKU: reformulate, warn, or drop from the California market.
If warning, ensure label, packaging, shelf signage, and website listing all carry compliant text.
Retain test reports and supplier letters for several years; litigation can reach back into older stock.
Verify the current Prop 65 chemical list, Safe Harbor Levels, and warning text requirements directly with OEHHA before finalizing compliance decisions.

Bottom line

For imported home decor and ceramics, Prop 65 is a labeling and testing program, not a ban — but ignoring it is expensive, because penalties flow out of settlements and the law is enforced by both the State of California and private plaintiffs. Build your compliance around material transparency, accredited lab testing for lead and cadmium, and accurate warnings on product, packaging, and website. Always confirm the current chemical list, Safe Harbor Levels, and warning content directly with OEHHA, since all three are updated on a regular cycle.

Note: This guide is general information for planning, not legal or customs advice. Rules change — always confirm current requirements with the relevant customs authority or a licensed broker before you ship.