; 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); or (B) within a disadvantaged community (as defined in section 1452(d)(3) of the Safe Drinking Water Act ( 42 U.S.C. 300j–12(d)(3) )). (5) Public water system The term public water system has the meaning given the term in section 1401 of the Safe Drinking Water Act ( 42 U.S.C. 300f ). (6) Water efficiency incentive program The term water efficiency incentive program means a program for providing incentives, including direct installation services, to residential, commercial, or industrial customers of a public water system for the purchase, lease, installation, use, or implementation, as applicable, of water-efficient upgrades. (7) Water-efficient upgrade (A) In general The term water-efficient upgrade means a product, landscape, label, process, or service for a residential, commercial, or industrial building, or the landscape of such a building, that is— (i) rated for water efficiency and performance under the WaterSense program, the Energy Star program, or such other methodology as determined to be appropriate by the Administrator; or (ii) otherwise determined by the Administrator to improve water-use efficiency. (B) Inclusions The term water-efficient upgrade includes— (i) a faucet; (ii) a showerhead; (iii) a dishwasher; (iv) a toilet; (v) a clothes washer; (vi) an irrigation product or service; (vii) advanced metering infrastructure; (viii) a flow monitoring device; (ix) a landscaping or gardening product, including moisture control or water-enhancing technology; (x) xeriscaping, turf removal, or another landscape conversion that reduces water use (except for the installation of artificial turf); and (xi) any other product, landscape, process, or service— (I) certified pursuant to the WaterSense program