42 U.S.C. § 18939

1. (a)The Secretary, acting through the Director, shall create a program, in consultation with the Environmental Protection Agency, for premise plumbing research, including to—
   1. (1)conduct metrology research on premise plumbing in relation to water safety, security, efficiency, sustainability, and resilience; and
   2. (2)coordinate research activities with academia, the private sector, nonprofit organizations, and other Federal agencies.
2. (b)For purposes of this section, the term “premise plumbing” means the water distribution system located within the property lines of a property, including all buildings and permanent structures on such property. Such term includes building supply and distribution pipes, fixtures, fittings, water heaters, water-treating and water-using equipment, and all respective joints, connections, devices, and appurtenances.