This Interstate Technology & Regulatory Council (ITRC) PFAS website is designed to provide a working knowledge of the current state of PFAS science and practice (as of date of publication). This website includes the following resources:
- PFAS Technical and Regulatory Guidance Document (Web-based Guidance)
- Priority Topics (January 2026)
- Sorption-Based Technologies for Separation and Concentration of PFAS from Water (January 2026) (Full PDF – Coming Soon)
- Sections 2-17 (September 2023, with small updates January 2026)
- Case Studies (2020, 2023, January 2026)
- Data Tables (various dates of last update)
- Fact Sheets (September 2023)
- Vapor-forming PFAS and the Vapor Intrusion Pathway (January 2026)
- Training Resources (various archived webinars)
- Archived webinars; live classes can be found on the ITRC Training webpage.
As with other emerging contaminants, the evolving understanding of PFAS and the volume of scientific studies makes it difficult for most environmental practitioners to stay current with the critical information about these chemicals. Additionally, public concern about PFAS has created pressure on state and federal agencies to take action, resulting in evolving regulatory approaches and regulatory standards, screening values, and guidance values. Our understanding of PFAS will continue to improve as more scientific research is completed and published.
Note: This website and its contents are for informational purposes only. The content is accurate as of the dates of publication noted and is not regularly updated or maintained. Any references, links, or data contained herein may become outdated over time. ITRC assumes no responsibility for any consequences resulting from the use of outdated or incorrect information. For more information, read the full ITRC Disclaimer at https://pfas-1.itrcweb.org/about-itrc/#disclaimer
Permission is granted to refer to or quote from this publication with the customary acknowledgment of the source. The suggested citation for this document is as follows:
ITRC (Interstate Technology & Regulatory Council). 2026. PFAS Technical and Regulatory Guidance Document and Fact Sheets, PFAS-1. Washington, D.C.: Interstate Technology & Regulatory Council, PFAS Team. https://pfas-1.itrcweb.org/.
Published by the Interstate Technology & Regulatory Council, January 2026
