40 CFR § 35.2127
Federal facilities
June 9, 2020
Grant assistance shall not be provided for costs to transport or treat wastewater produced by a facility that is owned and operated by the Federal Government which contributes more than 250,000 gallons per day or 5 percent of the design flow of the complete waste treatment system, whichever is less.
(Approved by the Office of Management and Budget under control number 2040-0027)