The Contra Costa County Chapter provides liaison service to most levels of local government, such as the Board of Supervisors, LAFCO, Mayors Conference, county planning, cities and citizen committees.  Special district representatives provide input to these agencies and committees for coordinating services to all levels of government.

The Contra Costa County Chapter holds bi-monthly membership meetings and will hold special meetings when pertinent topics arise, to review legislation, share information, elect LAFCO representatives, organize special district responses to local and state programs, and cooperate on projects of mutual benefit.