The semiconductor industry occupies a unique and contested position in the global PFAS regulatory debate. While most manufacturing sectors are under pressure to find PFAS-free alternatives with relatively short transition timelines, chipmakers argue credibly that the physics of modern integrated circuit fabrication make PFAS genuinely irreplaceable in the near term. At the same time, semiconductor fabs are among the most significant industrial consumers of PFAS and generate highly complex PFAS-contaminated process water that requires sophisticated treatment before discharge.
Why Semiconductors Cannot Currently Be Made Without PFAS
Modern chip fabrication relies on PFAS at multiple points in the manufacturing process. Photoresist liquids—which define circuit patterns on silicon wafers through UV exposure—contain fluorinated compounds essential for adhesion, resolution, and chemical resistance at nanometer-scale feature sizes. Etching processes use PFAS-derived gases (including perfluorocarbons such as CF4, C2F6, and NF3) to achieve the precise, anisotropic material removal required for 3nm, 2nm, and sub-2nm node geometries. High-purity water distribution systems in fab facilities use PFAS-containing polymer tubing (primarily PTFE and PFA) because no other material can maintain the ultra-low particle and ionic contamination levels required by leading-edge process technology. Wafer polishing and cleaning steps use PFAS-containing surfactants that cannot currently be substituted without compromising yield.
The Semiconductor PFAS Consortium
The Semiconductor Industry Association (SIA) organized the Semiconductor PFAS Consortium as an international coalition of chipmakers—including TSMC, Intel, Samsung, SK Hynix, Micron, GlobalFoundries, and key equipment and chemical suppliers—to develop the technical data needed to formulate an industry-wide response to PFAS regulations. The Consortium has been preparing detailed technical submissions to ECHA’s REACH restriction evaluation and to U.S. EPA’s TSCA reporting requirements, documenting the specific PFAS uses that are genuinely essential to current chip manufacturing and those for which substitution roadmaps can be developed.
The Consortium’s position is that blanket PFAS restrictions would effectively halt the semiconductor supply chain—a supply chain that underpins not just consumer electronics but defense systems, medical devices, renewable energy infrastructure, and electric vehicles. This argument carries significant political weight in both the EU and the United States, where semiconductor supply chain security is a national policy priority following the COVID-era chip shortage. The EU REACH restriction proposal includes specific provisions for sector-based derogations, and the semiconductor industry is expected to receive one of the longer transition periods—potentially 12 years—for uses where substitution is genuinely not yet technically feasible.
Fab PFAS Water Discharges: A Significant Treatment Challenge
Semiconductor fabrication plants are large consumers of ultra-pure water (UPW) and generate substantial volumes of process wastewater containing PFAS from cleaning, rinsing, and etching operations. A modern advanced fab—such as TSMC’s facilities in Taiwan, Intel’s plants in Arizona and Ireland, or Samsung’s complexes in South Korea—may use tens of millions of gallons of ultra-pure water per day, generating PFAS-contaminated wastewater streams that must be treated before discharge to municipal sewers or directly to surface water.
The specific PFAS compounds in semiconductor wastewater—including perfluorocarbon gases that partially convert to carboxylic acid byproducts in wet scrubber systems, PFAS-based surfactants from cleaning steps, and fluoropolymer particulates from system component wear—are complex and often include compounds for which commercial-scale treatment data is limited. Advanced treatment technologies including activated carbon adsorption, electrochemical oxidation, and high-temperature incineration are being evaluated for semiconductor-specific PFAS waste streams. Under EPA’s TSCA 8(a)(7) reporting rule, semiconductor manufacturers are now required to document their historical PFAS use and disposal practices—creating a dataset that EPA will use to inform future effluent limit guidelines for the semiconductor sector.
South Korea and Taiwan: Major Fab Locations Without Strict PFAS Standards
The geographical concentration of leading-edge semiconductor manufacturing in South Korea (Samsung and SK Hynix) and Taiwan (TSMC) creates a notable regulatory gap: both countries have PFAS water standards significantly less stringent than the U.S. and EU, meaning that fab PFAS discharges in these locations face less treatment pressure than they would if the same facilities were located in regulated Western markets. As Korean and Taiwanese PFAS water standards tighten—driven in part by the same international pressure that led Japan to update its standards in 2026—fab operators in these countries will face increasing wastewater PFAS treatment requirements that create commercial opportunities for advanced treatment technology suppliers.