HB 2421 Washington House · 2025-2026 Regular Session

Concerning 6PPD and regrettable 6PPD substitutes in tires.

HB 2421 bans the use of 6PPD (a chemical in tires) and unsafe tire additives by 2035, directly affecting tire manufacturers and sellers in Washington. The bill requires tires to use "safer alternatives" proven non-toxic to aquatic life, with the Department of Ecology identifying unsafe substitutes through rules. It includes penalties up to $10,000 per violation for non-compliance and directs fines to environmental cleanup funds. The law aims to reduce toxic tire wear particles linked to salmon mortality in Washington waterways. It excludes certain federal-authorized tires but applies broadly to new vehicle tires sold in the state.

Issues: ✓ Environment

Bill status in committee 1 of 4 stages cleared

Introduction

Jan 2026

Committee Review

Floor Vote

Governor

Introduced Jan 13, 2026 Last action Feb 9, 2026

Maddy AI version diff · 2 comparisons

What changed between versions

Bill → Substitute Bill · 8 edits

MODERATE

The bill was revised to remove a temporary fee on tire sales and the associated mitigation fees, shifting the primary focus to restricting the manufacture and sale of tires containing 6PPD or unsafe substitutes. The scope was narrowed to specifically apply to 'vehicle tires' rather than all tires, and new exemptions were added for tires used in aviation, defense, and space sectors. The act now relies on future restrictions rather than immediate revenue collection to address the environmental impact of 6PPD on salmon.

Scope change

The bill's scope was narrowed from a general fee on all new replacement vehicle tires to a specific restriction on 'vehicle tires' containing 6PPD, with added exemptions for federal aviation, defense, homeland security, and NASA products.

FISCAL

Removed the $5 per tire fee and the tiered $3 and $6 per tire 6PPD mitigation fees that were previously levied on sellers.

Removed the 6PPD mitigation account and the waste tire removal account funding mechanisms tied to the removed fees.

TIMELINE

Removed the provision requiring a 10% annual increase in mitigation fees starting in 2028.

ELIGIBILITY

Added exemptions for vehicle tires used in products certified or regulated by the FAA, Department of Defense, Department of Homeland Security, and NASA.

REQUIREMENT

Changed the legislative intent from incentivizing a phase-out via fees to directly restricting the sale of tires containing 6PPD or regrettable substitutes after an industry transition period.

Removed the requirement for a 6PPD mitigation account and the administrative processes for certifying 6PPD-free tires.

DEFINITION

Modified the ban in Section 3 to specifically target 'new vehicle tires' instead of all new tires.

TECHNICAL

Reordered the bill's sections to reflect the removal of the fee-related sections, moving the new chapter creation to Section 7.

Floor votes

How they voted

No floor votes recorded yet.

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Feb 9, 2026

Committee

Referred to Rules 2 Review.

lower

Feb 9, 2026

Lower · Passed

Minority; without recommendation.

lower

Feb 9, 2026

Lower · Passed

Minority; do not pass.

lower

Feb 9, 2026

Lower · Passed

Executive action taken in the House Committee on Appropriations at 10:30 AM.

lower

Feb 6, 2026

Lower · Passed

Public hearing in the House Committee on Appropriations at 10:30 AM.

lower

Feb 3, 2026

Committee

Referred to Appropriations.

lower

Jan 29, 2026

Lower · Passed

Minority; do not pass.

lower

Jan 29, 2026

Lower · Passed

Executive action taken in the House Committee on Environment & Energy at 8:00 AM.

lower

Jan 19, 2026

Lower · Passed

Public hearing in the House Committee on Environment & Energy at 1:30 PM.

lower

1 primary · 7 co-sponsors