PFAS Resources

ADEQ is monitoring scientific, regulatory and legal developments related to PFAS (per- and polyfluoroalkyl substances) and participating in related discussions with federal, state and local agency partners. Referred to as emerging contaminants, PFAS exposure is linked to potential adverse human health outcomes and is the subject of increasing regulation and litigation. To keep the public and other stakeholders informed, ADEQ will update this PFAS Resources webpage with new information as it becomes available.

What are PFAS?

PFAS are a group of man-made chemicals with fire-retardant properties that have been manufactured and used by a variety of industries since 1940. PFAS have been used commercially in the United States to make products like stain and water resistant carpet and textiles, food packaging, firefighting foam, as well as in other industrial processes. The most studied PFAS compounds in the environment are PFOA/PFOS (perfluorooctanoic acid and perfluorooctane sulfonate). Since 2000, most industries have been phasing out the use of PFAS | EPA PFAS Webpage > and ATSDR PFAS Webpage >

What's Important for You to Know About PFAS | Learn More >

Regulation of PFAS is increasing at federal and state levels in the United States. New regulations are focusing on lowering the limits for acceptable levels of PFAS in groundwater and soil, as well as requiring remediation projects to address PFAS contamination.

What is the Environmental Protection Agency (EPA) doing?

In June 2022, EPA issued revised interim lifetime drinking water Health Advisories for two PFAS compounds, PFOA and PFOS, and added final Health Advisories for two additional PFAS compounds, PFBS and GenX.  EPA is expected to issue a draft Maximum Contaminant Level for PFOA and PFOS in fall of 2022 which should be finalized the following year. Regulation of PFAS is increasing at federal and state levels and is focused on lowering the limits for acceptable levels of PFAS in groundwater and soil, as well as requiring remediation projects to address PFAS contamination.

Current information about EPA’s PFAS Actions | PFAS > and EPA Actions >

  • EPA Actions 2016 – 2021| View >

What is Arizona doing?

  • Industry & Public Water System Screening | Learn More >

  • Public Water System PFAS Data (Luke Air Force Base Area) | Learn More >

  • Protecting Tucson’s Drinking Water Supply | Learn More >

  • AFFF Stakeholder Advice, Education & Outreach | Learn More >