1. Short title This Act may be cited as the PFAS Detection Act of 2018 . 2. Definitions In this Act: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Director The term Director means the Director of the United States Geological Survey. (3) Perfluorinated compound (A) In general The term per­fluorinated compound means a perfluoroalkyl substance or a polyfluoroalkyl substance that is manmade with at least 1 fully fluorinated carbon atom. (B) Definitions In this definition: (i) Fully fluorinated carbon atom The term fully fluorinated carbon atom means a carbon atom on which all the hydrogen substituents have been replaced by fluorine. (ii) Non-fluorinated carbon atom The term nonfluorinated carbon atom means a carbon atom on which no hydrogen substituents have been replaced by fluorine. (iii) Partially fluorinated carbon atom The term partially fluo­rinated carbon atom means a carbon atom on which some, but not all, of the hydrogen substituents have been replaced by fluorine. (iv) Perfluoroalkyl substance The term perfluoroalkyl substance means a manmade chemical of which all of the carbon atoms are fully fluorinated carbon atoms. (v) Polyfluoroalkyl substance The term polyfluoroalkyl substance means a manmade chemical containing a mix of fully fluorinated carbon atoms, partially fluorinated carbon atoms, and nonfluorinated carbon atoms. 3. Performance standard for the detection of perfluorinated compounds (a) In general The Director shall establish a performance standard for the detection of perfluorinated compounds. (b) Emphasis (1) In general In developing the performance standard under subsection (a), the Director shall emphasize the ability to detect as many perfluorinated compounds present in the environment as possible using analytical methods that are as sensitive as is feasible and practicable. (2) Requirement In developing the performance standard under subsection (a), the Director may— (A) develop methods to detect different perfluorinated