The Water Infrastructure Modernization Act of 2025 amends the Federal Water Pollution Control Act to reauthorize and significantly expand a pilot program for alternative water source projects. A key provision is the establishment of a broad definition for "intelligent water infrastructure technology" , which includes real-time monitoring, AI-driven optimization, advanced digital design, leak detection, and resilient water supply projects. The bill explicitly allows grant funds to be used for the engineering, design, construction, implementation, training, and operations of these intelligent technologies, clarifying that such operational costs are eligible for funding. This expansion aims to foster the adoption of innovative solutions to improve the efficiency, reliability, and resiliency of water infrastructure. To ensure accountability and progress, the legislation mandates annual reports to Congress detailing funded projects, their impact on resiliency, and recommendations for program improvement, with an initial report also covering denied applications. Finally, the bill doubles the annual authorized appropriation for the program from $25,000,000 to $50,000,000 and extends its authorization through fiscal year 2028 , providing increased resources and time for water infrastructure modernization.