Requires the Administrator of the Environmental Protection Agency (EPA) to: (1) establish the Water Infrastructure Resiliency and Sustainability Program to provide grants to owners or operators of water systems for programs or projects to increase the resiliency or adaptability of the systems to any ongoing or forecasted changes to the hydrologic conditions of a U.S. region, and (2) give priority to owners or operators of water systems that are at the greatest and most immediate risk of facing...