Residential customers of the Olivenhain Municipal Water District can get free recycled water through a program to conserve water and lower costs for consumers. According to the San Diego County Water Authority, “water recycling is the treatment and disinfection of municipal wastewater to provide a water supply suitable for non-drinking purposes.” Olivenhain produces recycled water by collecting wastewater from the 4S Ranch and Rancho Cielo areas, and processing it at the 4S Ranch Water Reclamation Facility in San Diego, the district states. The facility produces over one million gallons of recycled water per day, which is highly treated to meet irrigation standards.