after the pilot plant is constructed and is operational, for the design and construction
of a potable waste water reuse project,
along with integration of the additional potable processes into the existing nonpotable facilities, and the extension of the distribution systems to groundwater recharge areas, if the Secretary,
in cooperation with the Administrator of the Environmental Protection Agency
, determines that the established public health requirements and water quality goals and objectives are being met by the pilot plant, the public health and safety is not at risk as a result of the operation of the pilot plant, and the pilot plant is operating reliably.