; (B) $3,600,000,000 for fiscal year 2019; (C) $4,140,000,000 for fiscal year 2020; (D) $4,800,000,000 for fiscal year 2021; and (E) $5,500,000,000 for fiscal year 2022. (2) Availability Amounts made available pursuant to this subsection shall remain available until expended. (3) Reservation for needs surveys Of the amount made available under paragraph (1) to carry out this section for a fiscal year, the Administrator may reserve not more than $1,000,000 per year to pay the costs of conducting needs surveys under subsection (h). . 412. Affordability of new standards (a) Treatment technologies for small public water systems Clause (ii) of section 1412(b)(4)(E) of the Safe Drinking Water Act ( 42 U.S.C. 300g–1(b)(4)(E) ) is amended by adding at the end the following: If no technology, treatment technique, or other means is included in a list under this subparagraph for a category of small public water systems, the Administrator shall periodically review the list and supplement it when new technology becomes available. . (b) Assistance for disadvantaged communities (1) In general Subparagraph (E) of section 1452(a)(1) of the Safe Drinking Water Act ( 42 U.S.C. 300j–12(a)(1) ) is amended— (A) by striking except that the Administrator may reserve and inserting except that— (i) in any year in which enforcement of a new national primary drinking water regulation begins, the Administrator may use the remaining amount to make grants to States whose public water systems are disproportionately affected by the new regulation for the provision of assistance under subsection (d) to such public water systems; (ii) the Administrator may reserve ; and (B) by striking and none of the funds reallotted and inserting