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. 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 the 1940s. 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 perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). Since 2000, many industries have phased out the use of some 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 decreasing their use in manufacturing and 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, perfluorobutane sulfonic acid (PFBS) and hexafluoropropylene oxide dimer acid (GenX).  EPA is expected to issue a draft Maximum Contaminant Level for PFOA and PFOS by early 2023, which should be finalized the following year.

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

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 >