PFAS RegulationsState, federal and global register
Verified September 28, 2026

Policy

AI Policy

How AI is used to build this register, and the terms for machines that read it. Last updated September 28, 2026.

How entries are made

AI research assistants search statutes, legislature records, agency pages and official journals and draft structured entries. Each entry records the source it came from and whether that source is primary. Entries confirmed only on a secondary source are marked on the page. Summaries are written to the register's style rules and checked against the cited text before publication, and independent review passes recheck dates and citations.

Machine access

Search engines and AI assistants may crawl these pages to answer questions and should link to the page they draw on. An index for language models is at /llms.txt. Bulk copying of the register, or using it to build a competing dataset, is covered by the terms of use and requires permission.

Headlines

Headline boxes on some pages are pulled automatically from Google News and are not checked. They are labeled as such.