Irvine Ranch Water District (IRWD) is a California Special District formed in 1961 and incorporated under the California water code. IRWD headquarters are located in Irvine, California. IRWD offers the following services: potable water sales, sewer service and sale of reclaimed (or recycled) water and serves the city of Irvine and portions of Costa Mesa, Lake Forest, Newport Beach, Orange, Tustin and unincorporated areas of Orange County. IRWD has more than 101,000 connections with more than 300,000 customers spanning over 180 square miles (470 km2) of service area in Orange County.