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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> Table 6.15 Energy Intensity-Wastewater and Recycled Water <br /> Optional Submittal Table 0-2: Recommended Energy Reporting-WASTEWATER AND RECYCLED WATER <br /> Start Date of Reporting Period 7/1/2024 Only for Water Delivery Products Under the Urban Water <br /> End Date of Reporting Period 6/30/2025 Supplier's Operational Control <br /> Is upstream embedded energy in No Water Management Process <br /> the values reported? <br /> Units of Measure for Water AF • . <br /> Volume of Wastewater Entering Process(AF) 21,117 0 0 21,117 <br /> Wastewater Energy Consumed (kWh) 70,449 0 0 70,449 <br /> Wastewater Energy Intensity(kWh/AF) 10.2 0.0 0.0 10.2 <br /> Volume of Recycled Water Entering Process (AF) 0 0 0 0 <br /> Recycled Water Energy Consumed (kWh) 0 0 0 0 <br /> Recycled Water Energy Intensity(kWh/AF) 0.0 0.0 0.0 0.0 <br /> Quantity of Self-Generated Renewable Energy <br /> related to recycled water and wastewater operations <br /> 0 kWh <br /> Data Quality(drop down) <br /> Combination of Estimates and Metered Data <br /> Data Quality Narrative: <br /> Wastewater volume is an estimate based on water consumption in the service area and assumption of 65% return flow. <br /> Wastewater volume matches total shown in DWR Table 6-2. Energy is based on billed consumption. <br /> Narrative: <br /> Santa Ana operates the local wastewater collection system but does not operate treatment facilities. Operational control <br /> is limited to a wastewater lift station in the local collection system.This table does not include downstream energy <br /> consumed to treat the wastewater after Santa Ana's control. <br /> 6.10.2.1 Operational Control and Reporting Period <br /> The City's existing sewer system is made up of a network of gravity sewers.The City owns and operates <br /> two wastewater lift stations but no treatment facilities. Similar to the water supply energy intensity, <br /> wastewater energy intensity was calculated for the 2025 fiscal year. <br /> 6.10.2.2 Volume of Wastewater Entering Process <br /> In FY 2024-2025, the City collected and conveyed 21,117 AF of wastewater to OC San. The volume of <br /> wastewater is estimated based on potable use and assumption of 65 percent return flow to the <br /> wastewater system. The City provides water for indirect potable reuse, but the City does not have <br /> operational control over any part of the recycled water system. <br /> 6.10.2.3 Energy Consumption and Generation <br /> According to estimates referencing Southern California Edison electricity bills, the City's two wastewater <br /> lift stations consumed 70,449 kWh of electricity in FY 2025.There are no other wastewater facilities that <br /> CITY OF SANTA ANA <br />