On 177 acres situated between San Clemente’s Talega community and Ortega Highway, mountainous earthworks are taking shape. Santa Margarita Water District, which provides water and sewer services to Mission Viejo, Rancho Santa Margarita, Coto de Caza, Las Flores, Ladera Ranch, Rancho Mission Viejo and Talega, is building a 1.6-billion-gallon reservoir. When completed in 2020, Trampas Canyon Reservoir, less than a half-mile north of Talega, will be able to store recycled wastewater collected from as many as five South Orange County treatment plants.