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WashingtonSB 50332025-2026 Regular SessionSenateWALLET

Concerning sampling or testing of biosolids for PFAS chemicals.

Sponsored By: Jeff Wilson (Republican)

Became Law

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Bill Overview

Analyzed Economic Effects

5 provisions identified: 2 benefits, 1 costs, 2 mixed.

PFAS testing rules for biosolids facilities

By July 1, 2026, Ecology publishes PFAS sampling guidance. Facilities that generate biosolids must sample for PFAS up to once every three months. Sampling must start by January 1, 2027 and stop by June 30, 2028. An accredited lab must use EPA Method 1633A (as of December 2024). All results are due to Ecology by September 30, 2028.

New annual fees for biosolids permits

Ecology sets annual biosolids permit fees to cover permitting, monitoring, inspections, sampling/testing, assistance, and overhead. Each permit’s fee is based on how many homes or “residential equivalents” the system serves; if that cannot be estimated, Ecology uses other criteria. Fees apply going forward to all permits and can change no more than once every two years. All fee money goes to a dedicated state account and may be spent only, after appropriation, to run this program. Ecology posts fee collections and expenses and studies changes to support local health departments and lower local fees charged to permittees.

Septage excluded from PFAS sampling

For the PFAS sampling subsection, the law does not treat septic tank sludge (septage) as biosolids. If you handle septage, you are not required to do that PFAS sampling and testing.

PFAS biosolids report and advisory group

By September 30, 2028, Ecology convenes an advisory committee with farmers, toxicologists, utilities, local governments, and experts. By July 1, 2029, Ecology reports PFAS levels in Washington biosolids and gives recommendations. The report is public and uses the committee’s input.

State biosolids rules, definitions, and transport

Ecology must keep state biosolids rules aligned with federal standards and adopt updates within 12 months of new federal rules. The agency may seek delegation to run the federal sludge permit program in Washington. The law governs transport of biosolids under Title 81 RCW and preserves Utilities and Transportation Commission certificates issued before June 11, 1992. It defines biosolids to include municipal sewage sludge and, when safe to recycle, septic tank sludge, and it uses the existing state definition of PFAS chemicals.

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Sponsors & Cosponsors

Sponsor

  • Jeff Wilson

    Republican • Senate

Cosponsors

  • Deborah Krishnadasan

    Democratic • Senate

  • Jessica Bateman

    Democratic • Senate

  • Lisa Wellman

    Democratic • Senate

  • Liz Lovelett

    Democratic • Senate

  • Manka Dhingra

    Democratic • Senate

  • Mike Chapman

    Democratic • Senate

  • Perry Dozier

    Republican • Senate

  • Rebecca Saldaña

    Democratic • Senate

  • T'wina Nobles

    Democratic • Senate

  • Yasmin Trudeau

    Democratic • Senate

Roll Call Votes

All Roll Calls

Yes: 193 • No: 0

Senate vote • 4/17/2025

Final Passage as Amended by the House

Yes: 49 • No: 0

House vote • 4/10/2025

Final Passage as Amended by the House

Yes: 95 • No: 0 • Other: 3

Senate vote • 3/7/2025

3rd Reading & Final Passage

Yes: 49 • No: 0

Actions Timeline

  1. Effective date 7/27/2025.

    5/17/2025Senate

  2. Chapter 317, 2025 Laws.

    5/17/2025Senate

  3. Governor signed.

    5/17/2025legislature

  4. Delivered to Governor.

    4/23/2025legislature

  5. Speaker signed.

    4/22/2025legislature

  6. President signed.

    4/19/2025legislature

  7. Passed final passage; yeas, 49; nays, 0; absent, 0; excused, 0.

    4/17/2025Senate

  8. Senate concurred in House amendments.

    4/17/2025House

  9. Rules Committee relieved of further consideration. Placed on second reading.

    4/10/2025Senate

  10. Rules suspended. Placed on Third Reading.

    4/10/2025Senate

  11. Committee amendment(s) adopted with no other amendments.

    4/10/2025Senate

  12. Third reading, passed; yeas, 95; nays, 0; absent, 0; excused, 3.

    4/10/2025Senate

  13. Referred to Rules 2 Review.

    4/8/2025Senate

  14. APP - Majority; do pass with amendment(s).

    4/5/2025Senate

  15. APP - Executive action taken by committee.

    4/5/2025Senate

  16. Referred to Appropriations.

    3/26/2025Senate

  17. ENVI - Executive action taken by committee.

    3/24/2025Senate

  18. Minority; without recommendation.

    3/24/2025Senate

  19. ENVI - Majority; do pass.

    3/24/2025Senate

  20. First reading, referred to Environment & Energy.

    3/9/2025Senate

  21. Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0.

    3/7/2025Senate

  22. Rules suspended. Placed on Third Reading.

    3/7/2025Senate

  23. 1st substitute bill substituted.

    3/7/2025Senate

  24. Placed on second reading by Rules Committee.

    3/5/2025Senate

  25. Passed to Rules Committee for second reading.

    2/28/2025Senate

Bill Text

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