Washington HB 1170
From State AI laws: enacted, with proof: Which US states have enacted laws about AI systems, when do they start, who enforces them, and what is the penalty?
State: Washington
The state whose legislature passed the law.
BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF WASHINGTON
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Law: Chapter 167, Laws of 2026
The act's name, or its bill and chapter, as the state's own text gives it.
ENGROSSED SECOND SUBSTITUTE HOUSE BILL 1170 Chapter 167, Laws of 2026
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Subject: artificial intelligence-disclosures-content provenance
A short label, in the text's own words, for what the law regulates.
ARTIFICIAL INTELLIGENCE—DISCLOSURES—CONTENT PROVENANCE
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Signed: March 24, 2026
The date the governor signed, as the official record writes it. Dates are left in the form the source uses.
Approved March 24, 2026 10:04 AM
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Takes effect: February 1, 2027
When the law says its duties begin, in its own words. Some laws start in stages, and the quote shows which duty the date belongs to. Blank if the text gives no date and no official page states one.
This act takes effect February 1, 2027
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Applies to: a person or entity that creates, codes, or otherwise produces a generative artificial intelligence system that has over 1,000,000 monthly users
Who has duties, in the law's own words. A law with several parts shows the part named in its quote.
"Covered provider" means a person or entity that creates,15 codes, or otherwise produces a generative artificial intelligence16 system that has over 1,000,000 monthly users
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Enforced by: the attorney general
Who enforces it, as stated. Where the text only makes a violation part of another act, that act is shown. Blank if the text doesn't say.
The attorney general may bring an action in the name of the8 state
Source: https://lawfilesext.leg.wa.gov/biennium/2025-26/Pdf/Bills/Session%20Laws/House/1170-S2.SL.pdf. Read 2026-11-01. Checked by a second reader.
Maximum penalty: Not stated
The highest civil penalty stated, in the law's words. Blank if the text names no amount. Damages in a private suit and penalties set by another act don't count.
No source we could use stated this. A blank never means no.
Private right of action: Not stated
Yes or no only where the text says so plainly. Blank otherwise, including where a law just points to a consumer protection act.
No source we could use stated this. A blank never means no.
Latest change: Not stated
The newest amendment, delay, repeal or replacement found in an official source. Blank with the places we looked if none was found, which doesn't prove there is none.
No source we could use stated this. A blank never means no.