; and (iii) by redesignating subclauses (I) and (II) as items (aa) and (bb), respectively, and indenting appropriately; (C) by redesignating clause (ii) as subclause (II) and indenting appropriately; and (D) by inserting before clause (iii) the following: (ii) Remediation of contamination of groundwater (I) Definition of eligible site In this clause, the term eligible site means a site at which an emerging contaminant is present in, or has the potential to enter, a public water system or an underground source of drinking water. (II) Grants Notwithstanding any other provision of law and subject to subclause (III), amounts deposited under subsection (t) in a State loan fund established under this section may be used to provide grants to address contamination of groundwater at an eligible site, with a focus on perfluoroalkyl and polyfluoroalkyl substances. (III) Requirements (aa) Priorities In selecting the recipient of a grant using amounts made available to carry out this clause, a State shall use the priorities described in subsection (b)(3)(A). (bb) Cleanup standards Any detection, treatment, and remediation of groundwater carried out using amounts made available to carry out this clause shall be carried out in accordance with applicable State toxicity values, standards, and regulations of the State in which the detection, treatment, or remediation is being carried out. ; and (2) in subsection (t)(2), by striking $100,000,000 for each of fiscal years 2020 and inserting $300,000,000 for each of fiscal years 2021 . 5. Source water petition program Section 1454 of the Safe Drinking Water Act ( 42 U.S.C. 300j–14 ) is amended— (1) in subsection (a)— (A) in paragraph (1)(A), in the matter preceding clause (i), by striking political subdivision of a State, and inserting political subdivision of a State (including a county that is designated by the State to act on behalf of an unincorporated area within that county, with the agreement of that unincorporated area),