During 2021, the U.S. Environmental Protection Agency (EPA) collected discharge data for PFAS as part of its Multi-Industry PFAS Study. The purpose behind the study was to identify facilities producing or using PFAS, look at their wastewater characteristics, estimate PFAS in their discharges, and identify control practices and treatment options. As part of the study, EPA collected data from various EPA data sets and obtained information from other federal agencies (the U.S. Department of Transportation, Federal Aviation Administration (FAA), U.S. Department of Health and Human Services, and the Food and Drug Administration), states and EPA regions, as well as information from industrial users. After EPA collected its data, it categorically broke down the results of its study into the following groups:
- Organic chemicals, plastics, and synthetic fibers (OCPSF)
- Metal finishing
- Pulp, paper, and paperboard
- Textile mills
- Commercial airports
The information collected by EPA during its study will be used to further identify companies and facilities that manufacture, import, or process PFAS.