PFAS Washington guidance states that products manufactured before January 1, 2026 are excluded from PFAS Washington reporting. Initial reports are due June 4, 2025. This changes reporting scope by manufacturing date and should be reviewed separately from any reporting-deadline update.
Washington's PFAS reporting requirements under WAC 173-337 are now effective for manufacturers of products in 9 categories: apparel for extreme/extended use, automotive waxes, cookware and kitchen supplies, firefighting PPE, floor waxes and polishes, footwear, gear for recreation and travel, hard surface sealers, and ski waxes. First reports are due January 31, 2027, and annually thereafter. Products testing above 50 ppm total fluorine are presumptively deemed to contain intentionally added PFAS subject to reporting. Reports are submitted through the High Priority Chemical Data System (HPCDS).
The Washington State Board of Health adopted changes to WAC 246-290-315 and WAC 246-290-71006 on December 15, 2025. The updated rules maintain current protections related to PFAS in drinking water until new federal regulations are effective, and align State Action Levels (SALs) with federal Maximum Contaminant Levels (MCLs). The rules are effective January 15, 2026, and establish monitoring requirements transitioning from confirmed detection to running annual average (RAA) methodology.
Washington Department of Ecology adopted amendments to Chapter 173-337 WAC (Safer Products Restrictions and Reporting) on November 20, 2025, restricting intentionally added PFAS in 12 consumer product categories including apparel, cleaning products, and automotive washes. Sales prohibition takes effect January 1, 2027. The rule adds a 50 ppm total fluorine threshold for presumptive determination of intentionally added PFAS and requires manufacturer reporting for 9 additional product categories.
Washington adopted amendments to Chapter 173-337 WAC (Safer Products Restrictions and Reporting) restricting the manufacture, sale, and distribution of consumer products containing intentionally added PFAS. The rule restricts PFAS in apparel and accessories made from leather, natural textiles, synthetic textiles, or technical textiles; automotive washes; and cleaning products, with product bans effective January 1, 2027. The amendment adds a 50 ppm total fluorine threshold—products testing above this level are presumptively deemed to contain intentionally added PFAS subject to reporting requirements or bans unless the manufacturer submits a statement that PFAS were not intentionally added.
The Washington State Department of Ecology published the Safer Products for Washington Cycle 2 Identification of Priority Products Report to the Legislature, identifying architectural paint containing PFAS and alkylphenol ethoxylates (APEs) as priority products for potential future regulation. Product testing found approximately half of tested paint products contain organic fluorine (an indicator of PFAS). Manufacturers have reported PFAS use in architectural paint formulations. This identification initiates Phase 3 of Cycle 2, where Ecology will evaluate whether safer alternatives are feasible and available before proposing draft regulatory actions in late 2026.
Washington enacted SB 5033 establishing PFAS sampling and analysis requirements for facilities regulated under the Biosolids General Permit under Chapter 70A.226 RCW. Ecology must publish PFAS biosolids sampling guidance by July 1, 2026. Facilities must sample biosolids using EPA Method 1633A between January 1, 2027 and June 30, 2028, with all sampling results due to Ecology by September 30, 2028. A legislative report is due July 1, 2029.
Washington enacted Senate Bill 5033 (Chapter 70A.226 RCW) establishing mandatory PFAS sampling requirements for biosolids. Facilities permitted under the Statewide General Permit for Biosolids Management must conduct temporary sampling for PFAS from January 1, 2027 through June 30, 2028. The law mandates testing to determine the extent of PFAS contamination in biosolids widely used in farming, without imposing an outright ban on biosolids use.