California Prop 65 Enforcement Trends and Business Risk

Why Prop 65 enforcement risk matters

California Proposition 65 allows the Attorney General, specified public prosecutors, and private parties acting in the public interest to enforce warning and discharge requirements. A private enforcer generally begins with a 60-day notice. For businesses, the practical risk can include investigation costs, reformulation, warning changes, civil penalties, settlement payments, and attorney fees.

Early enforcement of Prop 65

In 2014 private enforcement had already produced hundreds of cases each year and more than $150 million in recoveries since 1986. It also discussed reform pressure, industry coordination, and defendants challenging claims. While those figures have now changed, private enforcement remains a defining feature of Prop 65.

What enforcement looks like today

Businesses should monitor current 60-day notices and annual settlement reports rather than rely on decade-old totals. Common targets change with testing activity, scientific disputes, consumer trends, and new chemical listings. Ecommerce also creates a second compliance surface: a physical label alone may not satisfy safe-harbor methods for an online purchase.

A major warning transition is underway

OEHHA’s revised short-form warning regulation became effective January 1, 2025. The new short form generally requires at least one chemical name, and businesses using the former short-form content have until December 31, 2027 to transition. Retailers receiving updated warning information during the transition have a 60-day period to revise online warnings. In 2026, companies should document exposure assessments, supplier data, warning decisions, website implementation, and retailer communications.

Reducing business risk

A defensible program starts with product-specific data, not automatic warning placement. Nexreg can support formulation review, exposure-focused compliance assessment, warning development, and label review. Contact Nexreg to evaluate products sold into California.

Please contact Nexreg regarding Prop 65 Compliance.