; and (B) efficient administration of State drinking water treatment revolving loan funds. (2) Report Not later than 1 year after the date of enactment of this Act, the Administrator of the Environmental Protection Agency shall submit to Congress, and make available to States, a report on the review conducted under paragraph (1), including any recommendations. (b) GAO Report Not later than 18 months after the date of enactment of this Act, the Comptroller General of the United States shall prepare and submit to Congress a report containing— (1) the results of a study of cost-effective and economically feasible rehabilitation or replacement of drinking water infrastructure to meet the goals of the Safe Drinking Water Act; and (2) an assessment of barriers that preclude communities from using materials and technologies studied pursuant to paragraph (1).