North Bay Regional Water Treatment Plant, Fairfield-Vacaville Water Works Project

The City of Fairfield is leading a project to expand and modernize the North Bay Regional Water Treatment Plant, which is jointly operated by the Cities of Fairfield and Vacaville. The primary objective is to increase water treatment capacity from approximately 52.7 million gallons per day to a maximum of 65 million gallons per day to meet existing and planned water demands. This phased expansion includes the installation of new and upgraded water treatment facilities, pumping and chemical storage systems, electrical and control systems, and operations facilities. To ensure operational reliability and resiliency, the project incorporates energy improvements such as battery energy storage and emergency backup generation. A critical component of the project is the construction of a new treated-water transmission pipeline connecting the plant to the City of Vacaville's existing distribution system, with the Linear Trail and Peabody Road alignments currently under consideration. The project is being executed in compliance with the California Environmental Quality Act, with specific mitigation strategies addressing biological resources, cultural assets, geology, noise, wildfire, and aviation safety hazards relative to the Travis Air Force Base Airport Land Use Compatibility Plan. The project is located in central Solano County, specifically within the City of Fairfield.