More recently, in a suit against the EPA in April, Public Employees for Environmental Responsibility (PEER), a Washington, D.C.-based NGO, alleged that the agency was “withholding documents explaining why it has adopted an exceedingly limited definition of [PFAS].”
EPA subsequently released more than 2,500 pages of documents, but on June 10 PEER said in a statement that it found “no scientific basis” for the EPA’s working definition of PFAS, and “no reasons given for excluding thousands of chemicals included in State definitions.” PEER added that it will challenge in court redactions in the EPA’s documents that “may mask the scientific basis” for its PFAS definition.