---
type: "Bill"
title: "Concerning sampling or testing of biosolids for PFAS chemicals."
description: "Concerning sampling or testing of biosolids for PFAS chemicals."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2025-2026"
identifier: "SB 5033"
citation: "Washington SB 5033 (2025-2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["J. Wilson"]
version_count: 3
action_count: 42
vote_count: 3
first_action: "2024-12-13"
last_action: "2025-05-17"
source: "openstates"
source_identifier: "ocd-bill/3f4bfae3-fb39-4208-a7b2-cfdd0ce9ce42"
source_url: "https://app.leg.wa.gov/billsummary/?BillNumber=5033&Year=2025&Initiative=false"
source_hash: "a9ff241e1e8e18de5c1136497ab33ca738d9e6d3caca7c563f4be66361035e0f"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-wa"]
---

# Washington SB 5033 (2025-2026) — Concerning sampling or testing of biosolids for PFAS chemicals.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5033.htm)
2. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Bills/5033-S.htm)
3. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/Senate%20Passed%20Legislature/5033-S.PL.htm)

## Votes

- 3rd Reading & Final Passage (#5) — **49–0** (pass) · upper
- Final Passage as Amended by the House (#24) — **95–0** (pass) · lower
- Final Passage as Amended by the House (#12) — **49–0** (pass) · upper

## Sponsors

- J. Wilson — primary (person)
- Bateman — cosponsor (person)
- Chapman — cosponsor (person)
- Dhingra — cosponsor (person)
- Dozier — cosponsor (person)
- Krishnadasan — cosponsor (person)
- Lovelett — cosponsor (person)
- Nobles — cosponsor (person)
- Saldaña — cosponsor (person)
- Trudeau — cosponsor (person)
- Wellman — cosponsor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-12-13** Prefiled for introduction. `filing`
- **2025-01-13** First reading, referred to Local Government. `reading-1`
- **2025-01-20** Executive action taken in the Senate Committee on Local Government at 1:30 PM.
- **2025-01-20** LGV - Majority; without recommendation.
- **2025-01-20** And refer to Environment, Energy & Technology. `referral-committee`
- **2025-01-21** Referred to Environment, Energy & Technology. `referral-committee`
- **2025-02-07** Public hearing in the Senate Committee on Environment, Energy & Technology at 10:30 AM.
- **2025-02-18** Executive action taken in the Senate Committee on Environment, Energy & Technology at 1:30 PM.
- **2025-02-18** ENET - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2025-02-18** Minority; without recommendation. `committee-passage-unfavorable`
- **2025-02-18** And refer to Ways & Means. `referral-committee`
- **2025-02-19** Referred to Ways & Means. `referral-committee`
- **2025-02-24** Public hearing in the Senate Committee on Ways & Means at 1:30 PM.
- **2025-02-27** Executive action taken in the Senate Committee on Ways & Means at 1:30 PM.
- **2025-02-27** WM - Majority; do pass 1st substitute bill proposed by Environment, Energy & Technology. `committee-passage-favorable`
- **2025-02-28** Passed to Rules Committee for second reading.
- **2025-03-05** Placed on second reading by Rules Committee. `reading-2`
- **2025-03-07** 1st substitute bill substituted (ENET 25). `substitution`
- **2025-03-07** Rules suspended. Placed on Third Reading. `reading-3`
- **2025-03-07** Third reading, passed; yeas, 49; nays, 0; absent, 0; excused, 0. `reading-3`
- **2025-03-09** First reading, referred to Environment & Energy. `reading-1`
- **2025-03-17** Public hearing in the House Committee on Environment & Energy at 1:30 PM.
- **2025-03-24** Executive action taken in the House Committee on Environment & Energy at 1:30 PM.
- **2025-03-24** ENVI - Majority; do pass. `committee-passage-favorable`
- **2025-03-24** Minority; without recommendation. `committee-passage-unfavorable`
- **2025-03-26** Referred to Appropriations. `referral-committee`
- **2025-04-03** Public hearing in the House Committee on Appropriations at 1:30 PM.
- **2025-04-05** Executive action taken in the House Committee on Appropriations at 9:00 AM.
- **2025-04-05** APP - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2025-04-08** Referred to Rules 2 Review. `referral-committee`
- **2025-04-10** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2025-04-10** Committee amendment(s) adopted with no other amendments.
- **2025-04-10** Rules suspended. Placed on Third Reading. `reading-3`
- **2025-04-10** Third reading, passed; yeas, 95; nays, 0; absent, 0; excused, 3. `reading-3`
- **2025-04-17** Senate concurred in House amendments.
- **2025-04-17** Passed final passage; yeas, 49; nays, 0; absent, 0; excused, 0. `passage`
- **2025-04-19** President signed. `passage`
- **2025-04-22** Speaker signed. `passage`
- **2025-04-23** Delivered to Governor. `executive-receipt`
- **2025-05-17** Governor signed. `executive-signature`
- **2025-05-17** Chapter 317, 2025 Laws. `became-law`
- **2025-05-17** Effective date 7/27/2025. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3f4bfae3-fb39-4208-a7b2-cfdd0ce9ce42`. Confidence: reported (aggregated from official Washington legislature records).