This $375M progressive design-build mega project includes a surface water diversion, water treatment plant, transmission and distribution pipelines, and storage facilities. As both the designer-of-record and general contractor, CDM Smith’s open-book cost modeling and phased delivery approach helped Reclamation understand how design decisions affect project costs while providing Reclamation, the Pueblos, and the county with opportunities to provide input in design decisions. A structured startup, commissioning, and six-month O&M period will demonstrate the facility’s ability to meet all performance requirements before transitioning to long-term O&M. The completed system will enhance water resiliency, reliability, and improve quality of life for the four Settlement Pueblos and Santa Fe County residents.