Thousand Oaks Water and Sewage Companies Utility 2100 E Olsen Rd The Calleguas Municipal Water District is a public agency created by ballot measure in 1953 to provide southeastern Ventura County with a reliable supply of high quality water. Calleguas serves a 350-square-mile area and includes the cities of Oxnard, Camarillo, Moorpark, Thousand Oaks, Simi Valley, and Port Hueneme, as well as surrounding unincorporated areas. Thousand Oaks CA Water and Sewage Companies Utility Calleguas Municipal Water Dist www.calleguas.com Calleguas Municipal Water District California State Water Project Calleguas service area Camarillo conservation education delta drinking water environmental education ground water groundwater irrigation locally-developed water Moorpark Calleguas Municipal Water District California State Water Project Calleguas service area Camarillo conservation education delta drinking water environmental education ground water groundwater irrigation locally-developed water Moorpark Business Reviews Calleguas Municipal Water Dist Testimonials