Moulton Niguel Water District provides high-quality drinking water, recycled water and wastewater treatment services to custo ... mers in Aliso Viejo, Laguna Niguel, Laguna Hills, Mission Viejo, San Juan Capistrano and Dana Point. A leader in water efficiency and environmental protection, Moulton Niguel also maintains the lowest average bill in South Orange County. For more information about the District, visit www.mnwd.com. read more