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Lawmakers weigh science, ecology and industry costs in proposed 6PPD tire chemical ban
Summary
Substitute HB 24‑21 would ban 6PPD and certain 6PPD substitutes in vehicle tires beginning in 2035; proponents say the chemical is lethal to coho salmon and that upstream prevention is necessary, while tire manufacturers urge caution, citing no currently available safe alternatives and fiscal/supply impacts.
The committee received a briefing and lengthy public testimony on substitute House Bill 24‑21, which would prohibit the manufacture and sale of tires containing the tire‑protectant chemical 6PPD and ‘regrettable’ substitutes beginning in 2035. Staff described Ecology’s ongoing regulatory work under the Safer Products for Washington program and noted the bill preserves Ecology’s authority but places an…
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