Prop 65 Roundup - April 2026
Summary
ArentFox Schiff published its monthly Prop 65 Roundup covering California OEHHA regulatory activity for April 2026. Key items include OEHHA's final report finding synthetic turf crumb rubber poses insignificant health risks, confirmation that vinyl acetate warning requirements are now effective, a private enforcement action regarding lead in agar-agar powder, a new fish consumption advisory for Los Vaqueros Reservoir, and finalized hexavalent chromium health-protective concentration for drinking water.
What changed
This newsletter summarizes five distinct Proposition 65 developments from OEHHA and private enforcers. The most significant is OEHHA's final report finding recycled tire crumb rubber in synthetic turf presents insignificant health risks with no significant PFAS concerns, which may reduce litigation exposure for manufacturers and facility operators. Vinyl acetate warnings are now mandatory following its addition to the Prop 65 list as a carcinogen. A private enforcer filed a 60-day notice alleging lead in agar-agar powder without required warnings, highlighting ongoing enforcement activity against food product manufacturers. OEHHA also issued updated fish consumption advisories based on mercury tissue data and finalized a hexavalent chromium health-protective concentration for drinking water.
For consumer product manufacturers, the crumb rubber finding may provide a defense in Prop 65 litigation involving synthetic turf. All businesses selling products containing listed chemicals in California must maintain compliant warning programs, with vinyl acetate now added to that obligation. Food product manufacturers should be aware that agar-agar and similar ingredients may trigger Prop 65 lead warnings. Environmental and public health agencies will reference the updated fish advisory and Cr(VI) drinking water concentration in their work.
What to do next
- Monitor Proposition 65 compliance for products containing listed chemicals
- Review vinyl acetate warning obligations now in effect
- Track agar-agar powder enforcement action for lead exposure risk
Source document (simplified)
April 7, 2026
Prop 65 Roundup - April 2026
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Prop 65 Counsel: What To Know
Final OEHHA Report Finds Synthetic Turf Poses ‘Insignificant’ Health Risks
A final report released March 5 by California’s Office of Environmental Health Hazard Assessment (OEHHA) finds that recycled tires used as crumb rubber in synthetic turf are not likely to harm users or spectators, and there is no evidence of significant risk for cancer or other health problems from the material due to per- and polyfluoroalkyl substances (PFAS) and other chemicals.
Warning Obligations Take Effect for Vinyl Acetate
OEHHA has confirmed that Proposition 65 warning requirements are now in effect for vinyl acetate, following its addition to the Proposition 65 list as a chemical known to cause cancer.
Enforcement Action Raises Warning Considerations for Agar‑Agar Products
A private enforcer has filed a 60‑day notice alleging that green agar‑agar powder exposes consumers to lead without a required warning. The notice relies on OEHHA’s listing of lead under Proposition 65, although OEHHA does not enforce the statute.
OEHHA Issues Updated Fish Consumption Advisory for Los Vaqueros Reservoir
OEHHA has issued a new fish consumption advisory for Los Vaqueros Reservoir in Contra Costa County, providing safe‑eating guidance for six fish species commonly caught in the reservoir. The advisory is based on measured mercury levels in fish tissue and is intended to help consumers limit exposure to mercury while continuing to receive the nutritional benefits of eating fish.
OEHHA Finalizes Health Protective Concentration for Hexavalent Chromium in Drinking Water
OEHHA finalized a health‑protective concentration for noncancer effects of hexavalent chromium (Cr(VI)) as part of its ongoing process to update California’s drinking water Public Health Goal. The finalized concentration reflects OEHHA’s evaluation of the latest toxicological and exposure data and is intended to protect against adverse health effects associated with long‑term ingestion of Cr(VI) in drinking water.
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DISCLAIMER: Because of the generality of this update, the information provided herein may not be applicable in all situations and should not be acted upon without specific legal advice based on particular situations.
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