Per- and polyfluoroalkyl substances, commonly known as PFAS, are long-lasting chemicals that are quickly gaining notoriety for both their persistence in the environment and their ubiquity in water, air, and soil. Developed in the 1950s, PFAS are used in a wide range of products including firefighting foam, stain-resistant and water-repellant fabrics, nonstick cookware and many others. Concerns over PFAS contamination are mounting and the associated caselaw is growing. Federal contractors could be impacted by PFAS in two primary ways: first, contractors may face PFAS-related litigation resulting from the manufacture and distribution of affected products and second, contractors may have to adjust specifications to comply with the government’s shift away from products containing PFAS.