A groundbreaking assessment finds that removing “forever chemicals” across the EU would cost €100 billion annually while capturing less than 2% of ongoing emissions, rendering large-scale remediation economically unfeasible.
A comprehensive cross-border investigation has delivered a stark warning to European policymakers: attempting to remediate per- and polyfluoroalkyl substances (PFAS) contamination across the European Union through end-of-pipe treatments would cost an estimated €100 billion annually—approximately 20 times more than addressing legacy contamination—while still failing to prevent the accumulation of these persistent chemicals in the environment.
Published on January 22, 2026, as a preprint by researchers from the University of St. Thomas, Le Monde, Reporters United, and Norwegian technical institutions, the study “PFAS Remediation Across Europe: Costs and Limited Impacts” represents the first attempt to quantify the full economic scale of cleaning up PFAS across all 27 EU member states. Conducted under the umbrella of the “Forever Lobbying Project,” a collaborative journalism and research initiative, the findings challenge the prevailing assumption that advanced treatment technologies can effectively manage the growing PFAS crisis.
The Two Scenarios: Legacy vs. Emerging Contamination
The research team developed two distinct scenarios to frame the cost analysis. The “legacy scenario” focuses on remediating historical contamination from long-chain PFAS—specifically substances like PFOA and PFOS that have been largely phased out but persist in soil and water. This scenario targets 1,636 heavily contaminated soil hotspots (including airports, military bases, and manufacturing sites), landfill leachate from existing facilities, and drinking water treatment for approximately 5% of large supply zones that exceed current EU thresholds.
Even this limited scope carries a hefty price tag: an estimated €37 billion over 20 years (€1.8 billion annually). The bulk of these costs—roughly 80%—would fund soil remediation through landfilling or soil washing, with drinking water treatment accounting for most of the remainder.
However, the “emerging scenario” presents a far more daunting financial reality. This model assumes no reduction in PFAS production or use and attempts to remediate ongoing emissions of all PFAS, including ultra-short-chain compounds like trifluoroacetic acid (TFA). Under this scenario, treatment expands to encompass all 12,544 large drinking water supply zones across Europe, wastewater effluent from 790 major treatment plants serving populations over 150,000, agriculturally applied sewage sludge, and continued management of landfill leachate and contaminated soils.
The estimated cost for this comprehensive approach reaches approximately €100 billion annually—a figure that dwarfs the legacy scenario and has been described by researchers as financially unsustainable. The primary drivers of these costs are wastewater treatment (€39 billion/year), drinking water remediation (€33 billion/year), and sewage sludge processing (€22 billion/year).
The Cost-Effectiveness Paradox
Perhaps the most alarming finding is the vanishingly small return on this massive investment. According to the study, even the €100 billion annual expenditure under the emerging scenario would address only 1 to 20 tons of PFAS per year. This represents less than 2% of current estimated EU emissions of perfluoroalkyl acids (PFAAs) and their precursors, estimated at roughly 1,500 tons annually. Without concurrent restrictions on production and use, environmental stocks of PFAS would continue to grow unabated despite the expenditure.
The researchers note that remediation costs vary dramatically by medium, with drinking water proving the most expensive target due to the high dilution of contaminants. Removing one kilogram of PFAS from drinking water could cost between €30 million and €700 million, while treating landfill leachate—where concentrations are higher—ranges from €1 million to €20 million per kilogram removed. For wastewater effluent and sludge, costs hover between €3 million and €90 million per kilogram.
The TFA Challenge
The study highlights trifluoroacetic acid (TFA) as a particularly problematic example of why emerging PFAS are driving costs upward. As the most abundant PFAS in the environment, TFA is a degradation product of pesticides, pharmaceuticals, and refrigerants. Unlike longer-chain predecessors, TFA cannot be effectively removed by conventional activated carbon or ion exchange technologies. Addressing it requires energy-intensive reverse osmosis systems coupled with advanced destruction technologies for the resulting brine—procedures estimated to be roughly 100 times more expensive than treating legacy long-chain PFAS.
The ubiquity of TFA exacerbates the problem: while only 5% of water utilities might require treatment for legacy PFAS under current standards, practically all utilities would need upgrades to meet potential future TFA regulations. This shift from targeting 5% of systems to 100% explains a significant portion of the cost escalation between the two scenarios.
From Cleanup to Prevention
The research draws a sharp contrast between three potential management approaches. The “no action” scenario carries estimated health costs of €52 to €84 billion annually in Europe due to PFAS-related diseases—a burden that increases as environmental concentrations rise. The “remediation only” scenario, as detailed above, requires €100 billion yearly for incomplete results. The third path—aggressive pollution prevention through production restrictions and industrial emission controls—offers dramatically better economics.
Industrial data cited in the study illustrates this disparity. One U.S. manufacturing facility invested $100 million to install air emission controls that prevent 10 to 30 tons of PFAS precursors from entering the environment annually—costing approximately €500 per kilogram destroyed. This compares favorably to the €1 million to €90 million per kilogram required for environmental remediation. In other words, controlling emissions at a single factory can achieve greater pollution reduction than treating wastewater, sludge, and soil across the entire continent.
Policy Implications
The authors argue that their findings necessitate a fundamental paradigm shift in environmental management. “Preventing PFAS pollution would be less costly and more impactful than relying on remediation after release,” the study concludes, noting that full-scale environmental remediation of PFAS at current emission rates would ultimately exceed global GDP—a mathematical impossibility.
For policymakers, the message is clear: Extended Producer Responsibility (EPR) schemes and regulatory restrictions under frameworks like the EU’s REACH regulation must prioritize upstream prevention. The estimated €100 billion annual cost of the emerging remediation scenario could instead fund comprehensive phase-outs of non-essential PFAS uses, development of safer alternatives, and installation of industrial emission controls—measures that would actually prevent environmental accumulation rather than marginally mitigating it.
As the EU considers broader PFAS restrictions and member states like Denmark and the Netherlands implement stricter standards for TFA in drinking water, this research provides a crucial economic reality check. While treating contaminated sites and securing drinking water supplies remain necessary for public health protection, the study demonstrates that these measures cannot substitute for stopping pollution at its source. In the case of forever chemicals, prevention isn’t just better than cure—it may be the only financially viable option.