OC Public Works provides services on a regional basis to unincorporated areas, to cities, and to other County agencies and departments. The primary mission of the department is to protect and enrich the community through efficient delivery and maintenance of public works infrastructure, planning, and development services. OC Public Works core values are integrity, accountability, service and trust.

OC Public Works is a unique County department comprised of ten service areas: OC Development Services; OC Fleet Services; OC Administrative Services; OC Facilities Design & Construction; OC Facilities Maintenance & Central Utilities; OC Environmental Resources; OC Operations & Maintenance; OC Construction; OC Infrastructure Programs; and OC Survey. The Department currently has a workforce in excess of 950 positions.