SOURCE WATER PETITION PROGRAM.

SEC. 50103. 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),”; (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 “2026”.