For decades, per- and polyfluoroalkyl substances seemed irreplaceable. The carbon-fluorine bond — the strongest in organic chemistry at roughly 480 kilojoules per mole — gave PFAS their legendary durability: nothing stuck to them, nothing broke them down, and nothing on Earth could quite match their performance in repelling water, grease, and heat. That same indestructibility made them a public health catastrophe.
Now, in 2026, the substitution is no longer theoretical. It is happening at industrial scale, driven by regulation, litigation, and a new generation of green chemists who are proving that safer alternatives can perform. The question has shifted from can we replace PFAS? to are we replacing them wisely?
The 3M Watershed
On December 20, 2022, 3M shocked the chemicals world: the company that pioneered PFAS in the 1950s announced it would exit all PFAS manufacturing by the end of 2025 and work to discontinue PFAS across its product portfolio. With approximately $1.3 billion in annual PFAS sales at stake and projected pre-tax charges of $1.3 to $2.3 billion, the decision was both an environmental milestone and a corporate reckoning.
In February 2026, 3M's annual report confirmed: "3M completed its exit of PFAS manufacturing at the end of 2025."
But the fine print tells a more complex story. According to a ChemSec analysis published in early 2026, 3M still manufactures approximately 14,000 products containing PFAS — roughly two-thirds of its original PFAS-containing portfolio. The company removed PFAS from nearly 7,000 products over three years, eliminated only 3 types of PFAS entirely, and continues to use 139 other PFAS types (29 of which remain unidentified due to vendor trade secrets). The company now frames ongoing PFAS use as something it will "continue to evaluate" based on feasibility of alternatives.
It is progress — undeniably. But it also reveals the central challenge of the great substitution: stopping production of a chemical is far simpler than redesigning every product that depends on it.
530 Alternatives and Counting
A landmark study published in Environmental Science & Technology in January 2025 catalogued the state of PFAS replacement across industry. The researchers identified 530 PFAS-free alternatives spanning 18 use categories, from food packaging to electronics to firefighting foam. Their conclusion: potentially suitable alternatives already exist for at least 40 PFAS applications.
That is genuine cause for optimism. But the study also identified 83 applications where no adequate substitute has been found — high-performance areas like semiconductor manufacturing, certain medical devices, and extreme-temperature sealing where fluorine's unique properties remain, for now, essential.
The alternatives that are working fall into several distinct categories of green chemistry:
Bio-based barriers. Corn-starch-derived fluorine-free coatings now serve food packaging and textile industries. Plant-based waxes, cellulose derivatives, and natural oils are formulated as grease-resistant coatings for paper packaging. These materials decompose naturally — the opposite of forever chemicals — and companies like Solenis are supplying PFAS-free coatings to major food packaging manufacturers.
Silicone-based systems. Silicone polymers provide water repellency and heat resistance in fabrics, cookware, electronics, and floor polishes. The Berkeley Center for Green Chemistry has worked with industrial partners to develop silicon dioxide nanoparticles and silicon-containing polymers as PFAS replacements, particularly for applications like floor finishes affected by Maine's pioneering PFAS legislation.
Engineered organic polymers. Polyethers and polyesters, engineered for precise surface energy control, already serve carpet backings, paper coatings, and sports apparel. Companies are developing hybrid coatings that combine biopolymers with mineral barriers, delivering effective moisture and grease resistance without any fluorine.
Plasma polymerization. This solvent-free technique uses electrically charged gas to deposit ultra-thin polymer films that repel water and oil — performance once exclusive to PFAS — without persistent chemicals or volatile organic compounds.
The Outdoor Industry Leads
Patagonia has invested heavily in bio-based, non-fluorinated surface treatments for water-repellent outdoor apparel and has phased out traditional PFAS finishes. The move demonstrates that technical performance in demanding conditions — mountain rain, ocean spray, trail mud — is achievable without forever chemicals.
The retail sector has followed with remarkable speed. As of 2026, 32 retail chains representing more than 150,000 stores and over $654 billion in annual sales have committed to eliminating or reducing PFAS in food packaging, textiles, or other products. Starbucks, Burger King, and Wendy's are among them — driven not just by regulation but by customer demand and liability avoidance.
Firefighting Foam: The October Deadline
No sector illustrates the substitution challenge more starkly than firefighting. For decades, aqueous film-forming foam (AFFF) containing PFAS was the gold standard for extinguishing petroleum fires at military bases, airports, and petrochemical facilities. It was also the single largest source of PFAS groundwater contamination at hundreds of sites across America.
Congress set the deadline: through the National Defense Authorization Acts for FY2020 through FY2023, the Department of Defense must stop purchasing PFAS-based AFFF by October 1, 2024 and stop using it entirely by October 1, 2026 (with limited exceptions for shipboard systems still being validated).
To make this possible, DoD created MIL-PRF-32725 — a new military performance specification for fluorine-free firefighting foam, or F3. The spec defines extinguishment times, burn-back resistance, equipment compatibility, and environmental criteria that F3 agents must meet. Several commercial products have been qualified, and pilot deployments are underway at bases across the country.
The FAA has followed suit. While it historically required airport firefighting agents to meet MIL-F-24385 — which effectively mandated PFAS-based foam — the agency now allows fluorine-free alternatives that meet equivalent performance criteria. Major European airports including London Heathrow and Gatwick, plus Australian hubs like Sydney and Brisbane, have already completed the transition. U.S. airports are now permitted, though not yet universally required, to follow.
Battelle's testing and validation programs have been critical to this transition, evaluating whether F3 foams can meet required performance standards with existing firefighting hardware. GreenScreen for Safer Chemicals has provided hazard screening for PFAS-free foam alternatives, helping procurement officers distinguish genuinely safer options from potential regrettable substitutions.
The Innovation Pipeline
Beyond direct substitution, a new wave of companies is engineering fundamentally different approaches to the problems PFAS once solved:
Ionomr Innovations has developed hydrocarbon proton exchange membranes for fuel cells — PFAS-free alternatives to the fluorinated ionomers that have long been considered essential for hydrogen technologies. SGL Carbon offers graphite sealants and metallic gaskets as fluorine-free alternatives in sealing applications. Elkem Silicones provides silicone-based materials for electronics, seals, and applications requiring both heat and chemical resistance.
Change Chemistry (formerly connected to the Green Chemistry & Commerce Council) is accelerating commercialization by connecting chemical suppliers, major brands, and startups working on safer replacements. The European Union's Horizon Europe program has launched a dedicated funding call (HORIZON-CL4-2025-05) to develop safe and sustainable PFAS alternatives, targeting technologies from early research (TRL 3–4) to near-commercial readiness (TRL 6–7) in construction, technical textiles, and automotive applications.
The Regrettable Substitution Problem
Here is where EPR Foundation urges caution. The history of chemical substitution is littered with regrettable replacements — BPA swapped for BPS, PFOA replaced by GenX, one problem traded for another. A 2024 review in Environmental Science & Technology examining PFAS alternatives noted that "for alternatives to PFAS, setting realistic expectations is important. Not all substitutes may immediately match the performance of well-established chemicals."
The EPA's New Chemicals Program has reviewed hundreds of PFAS substitutes since 2000, evaluating persistence, bioaccumulation, and toxicity. The OECD provides a framework for alternatives assessment that supports structured decision-making. GreenScreen benchmarks help distinguish safer options from those that merely shift the hazard profile.
But the pace of substitution sometimes outstrips the pace of safety assessment. A recent study found that some PFAS "alternatives" — including HFPO-DA (GenX) — are themselves short-chain fluorinated compounds with emerging toxicity concerns. The lesson is clear: truly safer chemistry must be evaluated across its full life cycle, not just at the point of performance.
The Economic Case
ChemSec estimates the annual global economic costs of PFAS at approximately $16 trillion — encompassing health impacts, environmental remediation, and litigation. Against that staggering figure, the cost of substitution looks less like an expense and more like an investment. 3M's $10.3 to $12.5 billion drinking water settlement alone, paid over 13 years, represents the kind of liability that makes CFOs recalculate the true cost of "inexpensive" chemistry.
The IDTechEx PFAS 2025 report frames the transition as an enormous commercial opportunity: every application that currently depends on PFAS represents a market for whoever develops the safer, high-performing alternative first. The companies doing this work today are not just solving an environmental problem — they are building the next generation of materials science.
What We're Watching
At EPR Foundation, we believe the great substitution represents green chemistry's defining test. Can we design materials that perform as well as PFAS without persisting in the environment for millennia? The evidence increasingly says yes — but only if we maintain the discipline to demand proof of safety, not just proof of performance.
We are watching: the October 2026 DoD deadline for AFFF phase-out. The EU's proposed universal PFAS restriction and its impact on global supply chains. The 83 applications where no substitute yet exists and whether they represent genuine technical barriers or failures of investment and imagination. And whether 3M's remaining 14,000 PFAS-containing products will actually complete the transition — or whether "continue to evaluate" becomes a permanent posture.
The carbon-fluorine bond is the strongest in organic chemistry. But the bonds between safer chemistry, public health, and economic rationality are proving stronger still.