---
type: "Bill"
title: "Informing users when content is developed or modified by artificial intelligence."
description: "Informing users when content is developed or modified by artificial intelligence."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2025-2026"
identifier: "HB 1170"
citation: "Washington HB 1170 (2025-2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Shavers"]
version_count: 5
action_count: 49
vote_count: 3
first_action: "2025-01-06"
last_action: "2026-03-24"
source: "openstates"
source_identifier: "ocd-bill/23774a7b-0006-4947-aa33-f93060e22719"
source_url: "https://app.leg.wa.gov/billsummary/?BillNumber=1170&Year=2025&Initiative=false"
source_hash: "74a6c6b1f961d2f408c24aaa60fecd26c0584fd74c46faba2e085de4980db55d"
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 HB 1170 (2025-2026) — Informing users when content is developed or modified by artificial intelligence.

## 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/House%20Bills/1170.htm)
2. **Engrossed Second Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/House%20Bills/1170-S2.E.htm)
3. **Second Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/House%20Bills/1170-S2.htm)
4. **Second Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/House%20Passed%20Legislature/1170-S2.PL.htm)
5. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2025-26/Htm/Bills/House%20Bills/1170-S.htm)

## Votes

- Final Passage as Amended by the Senate (#1) — **55–38** (pass) · lower
- 3rd Reading & Final Passage (#9) — **56–37** (pass) · lower
- 3rd Reading & Final Passage as Amended by the Senate (#28) — **46–3** (pass) · upper

## Sponsors

- Shavers — primary (person)
- Fosse — cosponsor (person)
- Hill — cosponsor (person)
- Ormsby — cosponsor (person)
- Pollet — cosponsor (person)
- Ramel — cosponsor (person)
- Ryu — cosponsor (person)
- Taylor — cosponsor (person)
- Wylie — cosponsor (person)

## Timeline

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

- **2025-01-06** Prefiled for introduction. `filing`
- **2025-01-13** First reading, referred to Technology, Economic Development, & Veterans. `reading-1`
- **2025-01-17** Public hearing in the House Committee on Technology, Economic Development, & Veterans at 10:30 AM.
- **2025-01-28** Executive action taken in the House Committee on Technology, Economic Development, & Veterans at 10:30 AM.
- **2025-01-28** TEDV - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2025-01-28** Minority; do not pass. `committee-passage-unfavorable`
- **2025-01-31** Referred to Rules 2 Review. `referral-committee`
- **2026-01-12** By resolution, reintroduced and retained in present status.
- **2026-01-12** Rules Committee relieved of further consideration.
- **2026-01-12** Referred to Technology, Economic Development, & Veterans. `referral-committee`
- **2026-01-14** Public hearing in the House Committee on Technology, Economic Development, & Veterans at 8:00 AM.
- **2026-01-16** Executive action taken in the House Committee on Technology, Economic Development, & Veterans at 10:30 AM.
- **2026-01-16** TEDV - Majority; 2nd substitute bill be substituted, do pass. `substitution`
- **2026-01-16** Minority; do not pass. `committee-passage-unfavorable`
- **2026-01-20** Referred to Appropriations. `referral-committee`
- **2026-01-26** Public hearing in the House Committee on Appropriations at 4:00 PM.
- **2026-02-02** Executive action taken in the House Committee on Appropriations at 4:00 PM.
- **2026-02-02** APP - Majority; do pass 2nd substitute bill proposed by Technology, Economic Development, & Veterans. `committee-passage-favorable`
- **2026-02-02** Minority; do not pass. `committee-passage-unfavorable`
- **2026-02-04** Referred to Rules 2 Review. `referral-committee`
- **2026-02-10** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2026-02-13** 2nd substitute bill substituted (TEDV 26). `substitution`
- **2026-02-13** Floor amendment(s) adopted.
- **2026-02-13** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-02-13** Third reading, passed; yeas, 56; nays, 37; absent, 0; excused, 5. `reading-3`
- **2026-02-17** First reading, referred to Environment, Energy & Technology. `reading-1`
- **2026-02-20** Public hearing in the Senate Committee on Environment, Energy & Technology at 10:30 AM.
- **2026-02-24** Executive action taken in the Senate Committee on Environment, Energy & Technology at 1:30 PM.
- **2026-02-24** ENET - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2026-02-24** And refer to Ways & Means. `referral-committee`
- **2026-02-24** Minority; without recommendation. `committee-passage-unfavorable`
- **2026-02-25** Referred to Ways & Means. `referral-committee`
- **2026-02-27** Public hearing in the Senate Committee on Ways & Means at 2:30 PM.
- **2026-03-02** Executive action taken in the Senate Committee on Ways & Means at 10:30 AM.
- **2026-03-02** WM - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2026-03-02** Minority; without recommendation. `committee-passage-unfavorable`
- **2026-03-02** Passed to Rules Committee for second reading.
- **2026-03-03** Placed on second reading by Rules Committee. `reading-2`
- **2026-03-04** Committee amendment(s) adopted as amended.
- **2026-03-04** Rules suspended. Placed on Third Reading. `reading-3`
- **2026-03-04** Third reading, passed; yeas, 46; nays, 3; absent, 0; excused, 0. `reading-3`
- **2026-03-11** House concurred in Senate amendments.
- **2026-03-11** Passed final passage; yeas, 55; nays, 38; absent, 0; excused, 5. `passage`
- **2026-03-11** Speaker signed. `passage`
- **2026-03-11** President signed. `passage`
- **2026-03-12** Delivered to Governor. `executive-receipt`
- **2026-03-24** Governor signed. `executive-signature`
- **2026-03-24** Chapter 167, 2026 Laws. `became-law`
- **2026-03-24** Effective date 2/1/2027. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/23774a7b-0006-4947-aa33-f93060e22719`. Confidence: reported (aggregated from official Washington legislature records).