paraquat

Environmental Protection Agency describes paraquat as highly toxic — noting that “one sip can kill” — yet California remains one of the nation’s top users of the chemical.

Assembly Bill 1963 — a bill seeking to ban the use of paraquat in California — is working its way through the state Legislature and will be heard by the Senate Appropriations committee in August.

Assembly Bill 1963 would sundown the use of the herbicide paraquat, which has been linked to Parkinson’s disease and other health issues, beginning in January 2026.

New California legislation seeks to permanently ban paraquat, a powerful and widely used weedkiller that has been linked to Parkinson’s disease and other serious health issues.

Despite health concerns, paraquat continues to be a popular herbicide in California and other parts of the United States.