1. Short title This Act may be cited as the Department of Defense PFAS Discharge Prevention Act . 2. Stormwater discharge permits for Department of Defense facilities (a) Request for revision Not later than one year after the date of enactment of this Act, the Secretary of Defense shall, with respect to each permit under section 402(p) of the Federal Water Pollution Control Act ( 33 U.S.C. 1342(p) ) that applies to a Department of Defense facility, request from the State that issued the permit, or the Administrator of the Environmental Protection Agency, as applicable, approval of a modification to such permit, or a revision to an applicable stormwater management plan, to require— (1) monitoring of discharges of perfluoroalkyl and polyfluoroalkyl substances not less frequently than quarterly; and (2) implementation of appropriate best management practices or control technologies to reduce such discharges consistent with the requirements of such Act. (b) Funding Of the funds authorized to be appropriated by this Act, or otherwise made available to the Secretary in each fiscal year, for perfluoroalkyl and polyfluoroalkyl substances remediation efforts, not less than 1 percent shall be obligated or expended annually for testing for such substances in stormwater runoff at Department of Defense facilities.