1. Short title This Act may be cited as the Water Efficiency, Conservation, and Sustainability Act of 2023 . 2. Definitions In this Act: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Eligible entity The term eligible entity means any of the following: (A) A State, local, or Tribal government, or any special-purpose unit of such a government (including a municipal water authority). (B) A public water system. (C) A nonprofit organization. (3) Energy Star program The term Energy Star program means the Energy Star program established by section 324A of the Energy Policy and Conservation Act ( 42 U.S.C. 6294a ). (4) Low-income household The term low-income household includes a household that is— (A) eligible to receive payments under— (i) section 2605(b)(2) of the Low-Income Home Energy Assistance Act of 1981 ( 42 U.S.C. 8624(b)(2) ); or (ii) the Low-Income Household Drinking Water and Wastewater Emergency Assistance Program authorized by section 533 of division H of the Consolidated Appropriations Act, 2021 ( Public Law 116–260 ; 134 Stat. 1627)