; 134 Stat. 4864) are each amended by striking 2023 and inserting 2024 . 5602. Nogales wastewater improvement (a) Amendment to the Act of July 27, 1953 The first section of the Act of July 27, 1953 (67 Stat. 195, chapter 242; 22 U.S.C. 277d–10 ), is amended by striking the period at the end and inserting : Provided further , That such equitable proportion shall consist only of the costs directly associated with the treatment and conveyance of the wastewater of the city and, to the extent practicable, shall not include any costs directly associated with the quality or quantity of wastewater originating in Mexico. . (b) Nogales sanitation project (1) Definitions In this subsection: (A) City The term City means the City of Nogales, Arizona. (B) Commission The term Commission means the United States Section of the International Boundary and Water Commission. (C) International outfall interceptor The term International Outfall Interceptor means the pipeline that conveys wastewater from the United States-Mexico border to the Nogales International Wastewater Treatment Plant. (D) Nogales international wastewater treatment plant The term Nogales International Wastewater Treatment Plant means the wastewater treatment plant that— (i) is operated by the Commission; (ii) is located in Rio Rico, Santa Cruz County, Arizona, after manhole 99; and (iii) treats wastewater originating from— (I) Nogales, Sonora, Mexico; and (II) Nogales, Arizona. (E) Nogales sanitation project The term Nogales sanitation project means— (i) the International Outfall Interceptor; and (ii) the Nogales International Wastewater Treatment Plant. (2) Ownership and control (A) In general The Commission shall assume full ownership and control of the International Outfall Interceptor on the date on which— (i) the City has conveyed, without consideration, all right, title, and interest of the City in the International Outfall Interceptor to the Commission