Welcome to the North Bay Water Reuse Program (NBWRP/Program) website. The NBWRP is a regional water recycling initiative encompassing over 350 square-miles in portions of Marin, Sonoma and Napa counties surrounding northern San Francisco Bay, known as San Pablo Bay. The Program is a coordinated effort of 11 municipal, water and wastewater agencies working collaboratively to develop recycled water to build capacity and resiliency into the regions water supply.