; (B) in paragraph (4)(D)(i), by inserting (including a county that is designated by the State to act on behalf of an unincorporated area within that county) after of the State ; and (C) by adding at the end the following: (5) Savings provision Unless otherwise provided within the agreement, an agreement between an unincorporated area and a county for the county to submit a petition under paragraph (1)(A) on behalf of the unincorporated area shall not authorize the county to act on behalf of the unincorporated area in any matter not within a program under this section. ; and (2) in subsection (e), in the first sentence, by striking 2021 and inserting 2024 . 6. Assistance for small and disadvantaged communities (a) Existing programs Section 1459A of the Safe Drinking Water Act ( 42 U.S.C. 300j–19a ) is amended— (1) in subsection (b)(2)— (A) in subparagraph (B), by striking and at the end; (B) in subparagraph (C), by striking the period at the end and inserting a semicolon; and (C) by adding at the end the following: (D) the purchase of point-of-entry or point-of-use filters that are independently certified using science-based test methods for the removal of contaminants of concern; (E) investments necessary for providing accurate and current information about— (i) the need for filtration, filter safety, and proper maintenance practices; and (ii) the options for replacing lead service lines (as defined in section 1459B(a)) and removing other sources of lead in water; and (F) entering into contracts with nonprofit organizations that have water system technical expertise to assist underserved communities. (3) Contracting parties A contract described in paragraph (2)(F) may be between a nonprofit organization described in that paragraph and— (A) an eligible entity; or (B) the State of an eligible entity, on behalf of that eligible entity. ; (2) in subsection (c), in the matter preceding paragraph (1), by striking An eligible entity and inserting Except for purposes of subsections (j) and (m), an eligible entity