; or (4) is located within an area with respect to which the Administrator has published a determination under the first sentence of section 1424(e) relating to an aquifer that is the sole or principal drinking water source for the area. (e) No increased bonding authority Amounts awarded to affected community water systems under this section may not be used as a source of payment of, or security for (directly or indirectly), in whole or in part, any obligation the interest on which is exempt from the tax imposed under chapter 1 of the Internal Revenue Code of 1986. (f) Authorization of appropriations (1) In general There is authorized to be appropriated to carry out this section $500,000,000 for each of fiscal years 2024 through 2028. (2) Special rule Of the amounts authorized to be appropriated by paragraph (1), $25,000,000 are authorized to be appropriated for each of fiscal years 2024 and 2025 for grants under subsection (a) to pay for capital costs associated with the implementation of eligible treatment technologies during the period beginning on October 1, 2014, and ending on the date of enactment of this section. (g) Definitions In this section: (1) Affected community water system The term affected community water system means a community water system that is affected by the presence of PFAS in the water in the community water system. (2) Disadvantaged community The term disadvantaged community has the meaning given that term in section 1452. (3) Disproportionately exposed community The term disproportionately exposed community means a community in which climate change, pollution, or environmental destruction have exacerbated systemic racial, regional, social, environmental, and economic injustices by disproportionately affecting indigenous peoples, communities of color, migrant communities, deindustrialized communities, depopulated rural communities, the poor, low-income workers, women, the elderly, the unhoused, people with disabilities, or youth. (4) Eligible treatment technology The term eligible