; or (ii) by an incentive program and approved by the Administrator. Categories of water efficient products and services may include faucets, irrigation technologies and services, point-of-use water treatment devices, reuse, reclamation, and recycling technologies, toilets, and showerheads. (B) Third-party certification A product shall not be treated as a residential water efficient product until after the product— (i) is tested by an accredited third-party certifying body or laboratory in accordance with the WaterSense program; (ii) is certified by such body or laboratory as meeting the performance and efficiency requirements of such program; and (iii) is authorized by such program to use its label. (5) State The term State means each of the several States of the United States, the District of Columbia, Puerto Rico, the United States Virgin Islands, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands. (6) Watersense program The term WaterSense program means the program established by section 2 of this Act. (b) Eligible entities An entity shall be eligible to receive an allocation under subsection (c) if the entity— (1) establishes (or has established) an incentive program to provide rebates, vouchers, other financial incentives, or direct installs to consumers for the purchase and installation of residential water efficient products or services; (2) submits an application for the allocation at such time, in such form, and containing such information as the Administrator may require; and (3) provides assurances satisfactory to the Administrator that the entity will use the allocation to supplement, but not supplant, funds made available to carry out the incentive program. (c) Amount of allocations For each fiscal year, the Administrator shall determine the amount to allocate to each eligible entity to carry out subsection (d) taking into consideration— (1) the population served by the eligible entity in the most recent calendar year for which data are available