Sonoma Public Infrastructure, formerly the Department of Transportation and Public Works, is a county department which is responsible for managing Sonoma County’s airport, integrated waste, roads division, transit, and water systems (for Fitch Mountain, Freestone, Jenner, and Salmon Creek).
https://sonomacounty.ca.gov/development-services/sonoma-public-infrastructure-(formerly-tpw)
Our Mission: to plan, build, manage, and maintain Sonoma County's investment in quality services and infrastructure.