Aqueous film-forming foam (AFFF)—the firefighting agent used at military bases, civilian airports, and industrial facilities for decades—is responsible for some of the most widespread and severe PFAS contamination events globally. As regulators accelerate the phase-out of PFAS-based AFFF and mandate the transition to fluorine-free foam (F3) alternatives, the legacy contamination footprint of historical AFFF use is driving a global wave of groundwater and drinking water remediation projects that will sustain demand for advanced PFAS treatment technology for decades.
EU October 2025: PFAS Firefighting Foam Restriction Adopted
The European Commission adopted a dedicated restriction on PFAS in firefighting foams in October 2025, implementing a measure that had been carved out of the broader REACH restriction proposal to allow it to proceed on a faster timeline. The restriction prohibits the manufacture, placing on the market, and use of firefighting foams containing PFAS above defined concentration thresholds. Emergency services and airport operators were given defined transition periods to deplete existing AFFF stocks and implement fluorine-free alternatives. The restriction covers both new foam purchases and the use of existing inventory, with clear timelines for compliance that vary by use category and whether alternative foams have been certified to equivalent performance standards under EN 1568.
U.S. Military AFFF Phase-Out
The United States Department of Defense (DoD) completed its statutory obligation to eliminate the acquisition and use of PFAS-containing AFFF under the National Defense Authorization Act (NDAA) requirements phased in from 2020 through 2024. Military installations must now use fluorine-free firefighting foams for training exercises and emergency response unless a specific waiver is granted for operations where fluorine-free foams have not yet been certified to meet performance requirements. The DoD’s PFAS legacy contamination liability—estimated to affect more than 700 active and former military installations in the United States—has generated one of the largest environmental remediation programs in American history, with billions of dollars in cleanup costs anticipated over the next two to three decades.
Airport AFFF Contamination: A Global Pattern
Civilian airports represent the second-largest category of PFAS contamination from AFFF use globally. ICAO (International Civil Aviation Organization) regulations historically required AFFF use for fire suppression systems at international airports, creating a legacy of PFAS contamination in the soil and groundwater surrounding virtually every major airport built before 2000. Countries including Germany, the United Kingdom, Sweden, Norway, Australia, and Japan have documented significant PFAS plumes migrating from airport sites into municipal drinking water sources, prompting remediation programs that in some cases will run for 20 to 30 years.
Fluorine-Free Foam (F3) Transition: Technology Readiness
The transition from AFFF to fluorine-free foam is technically feasible for most applications. F3 alternatives based on synthetic hydrocarbon surfactants and protein-based foaming agents have been certified to Class B fire performance standards by accredited European testing laboratories under EN 1568. Major foam manufacturers including Solberg, Angus, and Bio-Ex have commercially available F3 products that have passed performance certification for aviation and hydrocarbon fire scenarios. However, challenges remain in converting existing foam delivery systems, training fire services on new application techniques, and managing the disposal of PFAS-contaminated legacy foam stocks at sites where AFFF has been stored for decades.
Remediation Technology Demand: What AFFF Sites Need
The remediation of AFFF-contaminated groundwater and surface water is the dominant driver of advanced PFAS water treatment demand globally. Contaminated groundwater plumes at military installations and airports typically contain a complex mixture of PFAS including PFOS, PFOA, PFHxS, PFBS, and various PFAS precursor compounds that can transform to terminal PFAS acids in the environment. Treatment trains for AFFF-contaminated water commonly combine granular activated carbon (GAC) adsorption, high-pressure ion exchange resin, nanofiltration membranes, and advanced oxidation processes such as electrochemical oxidation or UV/persulfate to achieve the sub-10 ng/L concentrations required by state and federal standards. OEM filter media manufacturers with comprehensive PFAS removal performance data—including precursor compounds and short-chain replacements—are well-positioned for the multi-decade remediation market created by the global AFFF legacy.