; or (B) an intermunicipal, interstate, or State agency. (2) Natural hazard The term natural hazard means a hazard caused by natural forces, including extreme weather events, sea-level rise, and extreme drought conditions. (3) Program The term program means the clean water infrastructure resilience and sustainability program established under subsection (b). (b) Establishment Subject to the availability of appropriations, the Administrator shall establish a clean water infrastructure resilience and sustainability program under which the Administrator shall award grants to eligible entities for the purpose of increasing the resilience of publicly owned treatment works to a natural hazard. (c) Use of funds An eligible entity that receives a grant under the program shall use the grant funds for planning, designing, or constructing projects (on a system-wide or area-wide basis) that increase the resilience of a publicly owned treatment works to a natural hazard through— (1) the conservation of water; (2) the enhancement of water use efficiency; (3) the enhancement of wastewater and stormwater management by increasing watershed preservation and protection, including through the use of— (A) natural and engineered green infrastructure; and (B) reclamation and reuse of wastewater and stormwater, such as aquifer recharge zones; (4) the modification or relocation of an existing publicly owned treatment works that is at risk of being significantly impaired or damaged by a natural hazard; (5) the development and implementation of projects to increase the resilience of publicly owned treatment works to a natural hazard