Prohibiting the use of paraquat unless authorized for research conducted under strict safety and reporting protocols.

 S-4342.1

SENATE BILL 6330

State of Washington

69th Legislature

2026 Regular Session

By Senators Liias, Saldaña, Dhingra, and Valdez

Read first time 01/29/26. Referred to Committee on Agriculture & Natural Resources.

AN ACT Relating to the use of paraquat; adding a new section to chapter 15.58 RCW; creating a new section; and providing an effective date.

BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF WASHINGTON:

NEW SECTION. Sec. 1. The legislature finds that:

(1) Parkinson's disease is a progressive neurodegenerative disorder that leads to a range of symptoms that worsen over time, imposing significant health, caregiving, and economic burdens on individuals, families, and communities. Researchers believe that Parkinson's disease arises from a combination of genetic, environmental, and aging-related factors. Mounting scientific evidence has identified associations between environmental exposures, including certain pesticides, and an elevated risk of Parkinson's disease.