CCWA is presently composed of eight members, all of which are public agencies. Each member agency is represented on the CCWA Board of Directors by one individual and an alternate. In addition, CCWA has one associate member, the La Cumbre Mutual Water Company and two non-member, private water users, Raytheon, Inc., and Morehart Land Company. Water service is also provided to Golden State Water Company and Vandenberg Air Force Base.

CCWA owns and operates a water treatment plant and pipeline that delivers water from the State Water Project to project participants in Santa Barbara and San Luis Obispo Counties. The distribution system consists of an approximate 130 mile long pipeline, treated water tanks at the water treatment plant, three interim storage facilities, one energy dissipation facility, nine turnouts, four isolation valve facilities, a chloramines removal and water pumping facility and Lake Cachuma inlet monitoring facility.