; (2) $10,000,000 for fiscal year 2019; (3) $15,000,000 for fiscal year 2020; and (4) $20,000,000 for fiscal year 2021. 2010. State residential water efficiency and conservation incentives program (a) Eligible entities An entity shall be eligible to receive an allocation under subsection (b) if the entity— (1) establishes (or has established), in consultation with the Department of Energy, an incentive program to provide financial incentives to residential consumers for the purchase of residential water-efficient products, buildings, landscapes, processes, or services; (2) submits an application for the allocation at such time, in such form, and containing such information as the Administrator of the Environmental Protection Agency 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. (b) Amount of allocations For each fiscal year, the Administrator shall determine the amount to allocate to each eligible entity to carry out subsection (c), taking into consideration— (1) the population served by the eligible entity during the most recent calendar year for which data are available; (2) the targeted population of the incentive program of the eligible entity, such as general households, low-income households, or first-time home owners, and the probable effectiveness of the incentive program for that population; (3) for existing programs, the effectiveness of the program in encouraging the adoption of water efficient products, buildings, landscapes, facilities, processes, and services, including the cost-effectiveness measured as acre-feet saved per program dollar; (4) any allocation to the eligible entity for a preceding fiscal year that remains unused