Program Information Santa Margarita Water District serves as the second largest retail water agency in Orange County and the lifeline to one of the fastest growing areas in Orange County. It is responsible for supplying clean, affordable, reliable water and wastewater services to a multi-million dollar economy.
The District provides water services to over 155,000 residents and businesses in Mission Viejo, Rancho Santa Margarita and the unincorporated areas of Coto de Caza, Las Flores, Ladera Ranch and Talega.