N.Y. Comp. Codes R. & Regs. tit. 10, § 53.2
(a) Terms used in this Part or to be used in complying with this Part have the following meanings:
(3) Allowable costs means all costs of a project which the department and/or corporation determines:
(17) Eligible project means a project for construction of a water supply facility which is intended to improve drinking water facilities, including a project that would be eligible for financing under or designed to comply with the requirements of the act, which the commissioner has certified, in writing: