; and (2) activities authorized under section 302(b)(2) of the Indian Health Care Improvement Act ( 25 U.S.C. 1632(b)(2) ). (e) Operation and maintenance funding (1) In general The Secretary may provide financial assistance for the operation and maintenance of water facilities serving Native communities. (2) Authorization of appropriations In addition to amounts otherwise available, there is authorized to be appropriated to the Secretary $100,000,000 for each of fiscal years 2024 through 2028, to remain available until expended, for the operation and maintenance of water facilities serving Native communities under paragraph (1). (3) Priority for funding In awarding funding for the operation and maintenance of water facilities under paragraph (1), the Secretary shall prioritize water facilities that the Secretary determines to be the most in need of assistance. (4) Future funding For not less than 5 fiscal years after the date on which an operation and maintenance of water facilities project described in paragraph (1) is completed, to the extent to which annual appropriations are available, the Secretary shall include the completed water facilities project as eligible for sustained funding support and guidance to ensure that— (A) the investments in the water facilities are adequately maintained and operated for the health and welfare of Native communities served; (B) the infrastructure investment is protected; and (C) the intended economic benefit is realized. 6. Funding for native american affairs technical assistance program of the bureau of reclamation In addition to amounts otherwise available, there is authorized to be appropriated to the Secretary of the Interior $18,000,000 for use, in accordance with section 201 of the Energy and Water Development Appropriations Act, 2003 ( 43 U.S.C. 373d ), for the Native American Affairs Technical Assistance Program of the Bureau of Reclamation for each of fiscal years 2024 through 2028, to remain available until expended.