1. Short title This Act may be cited as the Water Systems PFAS Liability Protection Act . 2. Exemption of water and wastewater treatment facilities from CERCLA liability for releases of PFAS (a) Definitions In this section: (1) Covered perfluoroalkyl or polyfluoroalkyl substance The term covered perfluoroalkyl or polyfluoroalkyl substance means a non-polymeric perfluoroalkyl or polyfluoroalkyl substance that contains at least 2 sequential fully fluorinated carbon atoms, excluding gases and volatile liquids, that is a hazardous substance (as defined in section 101 of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 ( 42 U.S.C. 9601 )). (2) Indian tribe The term Indian Tribe has the meaning given the term in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 ). (3) Protected entity The term protected entity means— (A) a public water system (as defined in section 1401 of the Safe Drinking Water Act ( 42 U.S.C. 300f )); (B) a publicly or privately owned or operated treatment works (as defined in section 212 of the Federal Water Pollution Control Act ( 33 U.S.C. 1292 )); (C) a municipality to which a permit under section 402 of the Federal Water Pollution Control Act ( 33 U.S.C. 1342 ) is issued for stormwater discharges; (D) a political subdivision of a State or a special district of a State acting as a wholesale water agency