In November 1986, State of California voters approved a ballot initiative to address concerns about exposures to toxic chemicals. That initiative became The Safe Drinking Water and Toxic Enforcement Act of 1986, better known by its original name, Proposition 65.
New regulations were adopted in August 2016 that amended the current provision for "clear and reasonable" Proposition 65 warnings. The new regulations became effective on August 30, 2018 and apply to products manufactured on or after that date.
For more information, please visit https://www.p65warnings.ca.gov/.