Preserving the ability of public officials to address communicable diseases.
House Bill 1531 establishes a state policy that public health responses to communicable diseases must be guided by the best available science and evidence-based measures, including immunizations and vaccines. It requires state and local health officials to implement and promote these measures within available resources. The bill also prohibits the state or any local government from enacting laws or policies that forbid the implementation and promotion of such measures, declaring any existing prohibitive policies null and void. This legislation clarifies the ability of public health officials to use scientifically proven methods to control disease spread, without creating new requirements for individuals to receive vaccines.
Bill status
signed
all 5 stages cleared
Introduction
Jan 2025
Committee Review
Mar 2025
House Passage
Apr 2025
Senate Passage
Apr 2025
Signed into Law
Apr 2025
Introduced Jan 23, 2025
Signed Apr 21, 2025
Maddy AI version diff · 3 comparisons
What changed between versions
Engrossed Substitute Bill
→
Substitute Passed Legislature
·
3 edits
MINOR
The document was updated from a draft version to the official certification of enrollment, confirming that the bill was passed by both the House and Senate in the 2025 Regular Session. This change is procedural and administrative, serving as the formal record that the legislation is ready for the Governor's signature, rather than altering the bill's actual policy content.
TECHNICAL
Added the official Certification of Enrollment header, including session details (69th Legislature, 2025 Regular Session) and specific passage dates and vote counts for both chambers.
Included a certification statement signed by the Chief Clerk of the House of Representatives attesting to the bill's passage.
Added the signature lines and filing approval section for the Secretary of State.
Floor votes · Senate Apr 10, 2025 · House Mar 8, 2025
How they voted
33–18
Passed
Total votes 51
Apr 10, 2025
D
Democratic31
100% Yea
R
Republican20
90% Nay
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
28
Key actions
13
Committee
9
Apr 21, 2025
Signed into law
Governor signed.
executive
Apr 14, 2025
Upper · Passed
President signed.
upper
Apr 11, 2025
Lower · Passed
Speaker signed.
lower
Apr 10, 2025
Senate · Passed
Senate Vote: pass (33-18)
senate
Mar 25, 2025
Upper · Passed
Minority; do not pass.
upper
Mar 25, 2025
Upper · Passed
HLTC - Majority; do pass.
upper
Mar 25, 2025
Upper · Passed
Executive action taken in the Senate Committee on Health & Long-Term Care at 10:30 AM.
upper
Mar 21, 2025
Upper · Passed
Public hearing in the Senate Committee on Health & Long-Term Care at 8:00 AM.
upper
Mar 8, 2025
Lower · Passed
Floor amendment(s) adopted.
lower
Feb 21, 2025
Committee
Referred to Rules 2 Review.
lower
Feb 21, 2025
Lower · Passed
Minority; without recommendation.
lower
Feb 21, 2025
Lower · Passed
Minority; do not pass.
lower
Feb 21, 2025
Lower · Passed
Executive action taken in the House Committee on Health Care & Wellness at 8:00 AM.
lower
Jan 31, 2025
Lower · Passed
Public hearing in the House Committee on Health Care & Wellness at 8:00 AM.
lower
1 primary · 14 co-sponsors
Sponsors
Ask Maddy
·
AI policy assistant
Ask Maddy about HB 1531
Scope: WA
Hi! I can help you understand HB 1531. What would you like to know?
Try one of these
i
Maddy answers using official bill text and legislative records. Always verify before sharing.
Sources cited inline