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Trends / Health

PFAS

3 Federal Register documents matched this search in the 12 weeks through the week of October 26, 2026, against 10 in the 12 before. That is too few to read a direction from.

Reading
Too few to readUnder 24 documents across the last two 12-week windows
Last 52 weeks
27, against 31 in the 52 before
Share of all documents
0.1 percent over the last 52 weeks, against 0.1 percent in the 52 before

Latest 12 weeks

Documents per week 12-week average

Enlarged, same height scale

The last 52 weeks as a table
Documents per week for PFAS, newest first
Week ofDocuments
October 26, 20260
October 19, 20261
October 12, 20260
October 5, 20260
September 28, 20261
September 21, 20260
September 14, 20260
September 7, 20260
August 31, 20260
August 24, 20260
August 17, 20260
August 10, 20261
August 3, 20260
July 27, 20261
July 20, 20261
July 13, 20260
July 6, 20261
June 29, 20262
June 22, 20261
June 15, 20261
June 8, 20260
June 1, 20260
May 25, 20261
May 18, 20262
May 11, 20260
May 4, 20260
April 27, 20261
April 20, 20260
April 13, 20262
April 6, 20261
March 30, 20261
March 23, 20261
March 16, 20260
March 9, 20260
March 2, 20260
February 23, 20261
February 16, 20260
February 9, 20260
February 2, 20261
January 26, 20260
January 19, 20260
January 12, 20260
January 5, 20261
December 29, 20250
December 22, 20250
December 15, 20251
December 8, 20250
December 1, 20250
November 24, 20252
November 17, 20250
November 10, 20252
November 3, 20250

"PFAS"

Run against the full text of the Federal Register, published by the Office of the Federal Register, National Archives. One document counts once, however many times the words appear, and a passing mention counts the same as a whole rule.

PFAS are per- and polyfluoroalkyl substances, a family of long-lasting industrial chemicals. Documents that spell the name out and never use the short form are not counted.

Run this search for August 10, 2026 to November 1, 2026Download every count

On the list since November 5, 2026. Through the week of October 26, 2026, retrieved November 5, 2026. Corrections to the searches.

Who published it

  • Environmental Protection Agency1
  • Health and Human Services Department1
  • Regulatory Information Service Center1

3 top-level agencies in the latest 12 weeks. A document can carry more than one agency, and a document the source does not link to an agency is left out of these counts.

Micro or macro

  • Micro: no. It needs 3 rises in a row and has 0.
  • Macro: not possible here. It appeared in 3 of the latest 12 weeks and came from 3 publishers, where 10 are needed, and nearly every publisher here belongs to one government.

The tests are in Method 1.3. A topic is a subject. It carries no claim, so nothing here says what any document argues.

In company filings

A separate count from SEC EDGAR full-text search, in six report forms. Through the week of October 26, 2026, 112 documents matched in the latest 12 weeks, and 728 in the latest 52, against 641 in the 52 before (+14%). These are not added to the Federal Register count above.

Latest 12 weeks

Documents per week 12-week average

Enlarged, same height scale

  • The test in company filings: passes. It appeared in 12 of the latest 12 weeks, from 30+ filers in 5 regions. Passing here alone is not a macro trend, under Method 1.3.

"PFAS"

Run this search for August 10, 2026 to November 1, 2026All topics in company filings

In state bills

A separate count from Open States, of bills and resolutions with the phrase in their title or summary. Through the week of October 19, 2026, 2 bills matched in the latest 12 weeks, and 97 in the latest 52, against 142 in the 52 before. These are not added to the other counts above.

Latest 12 weeks

Bills per week 12-week average

Enlarged, same height scale

  • The test in state bills: does not pass. It appeared in 1 of the latest 12 weeks, from 2 legislatures in 2 regions. Passing here alone is not a macro trend, under Method 1.3.

PFAS

All topics in state billsThe bills behind the counts

Latest rules and presidential documents

  1. Hazard Analysis and Risk-Based Preventive Controls for Human Food; Draft Guidance for Industry; AvailabilityProposed Rule, Health and Human Services Department
  2. Significant New Use Rules on Certain Chemical Substances (26-3)Proposed Rule, Environmental Protection Agency
  3. Revisions To Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water SystemsProposed Rule, Environmental Protection Agency
  4. Safety Standard for Lithium-Ion Batteries Used in Micromobility Products and Electrical Systems of Micromobility Products Containing Such BatteriesProposed Rule, Consumer Product Safety Commission
  5. Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020Rule, Environmental Protection Agency

Any notices in the count are left out of this list because they can name private people.

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