The Municipal Water District of Orange County (MWDOC) is a wholesale water supplier and resource planning agency whose efforts focus on sound planning and appropriate investments in water supply development, water use efficiency, public information, legislative advocacy, water education and emergency preparedness. Established in 1951, MWDOC now serves nearly 3.2 million Orange County residents through 28 retail water agencies. MWDOC’s service area covers all of Orange County with the exception of the cities of Anaheim, Fullerton and Santa Ana.