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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> The final expansion of the GWRS is the third and final phase of the project and was completed in 2023. <br /> The plant now produces 130 mgd and requires additional treated wastewater from OC San.This <br /> additional water comes from OC San's Treatment Plant 2, which is in the City of Huntington Beach <br /> approximately 3.5 miles south of the GWRS. The Final Expansion project included expanding the existing <br /> GWRS treatment facilities, constructing new conveyance facilities at OC San Plant 2, and rehabilitating an <br /> existing pipeline between OC San Plant 2 and the GWRS. Following completion, the GWRS plant now <br /> recycles 100 percent of OC San's reclaimable sources and produces enough water to meet the needs of <br /> over 1 million people. <br /> 6.6.2 Wastewater <br /> The City operates and maintains over 392 miles of local sewer collection pipes and two sewer lift stations <br /> that feed into OC San's trunk sewer system to OC San's extensive system of gravity flow sewers, pump <br /> stations, and pressurized sewers. Ultimately, the wastewater is treated at OC San treatment plants in <br /> Fountain Valley (Plant No. 1) and Huntington Beach (Plant No. 2).Table 6.10 summarizes the wastewater <br /> collected by the City and transported to OC San's system in 2025. <br /> Table 6.10 Wastewater Collected within the City's Service Area in 2025 <br /> Submittal Table 6-2 Retail:Wastewater Collected Within Service Area in 2025 <br /> Water Code Section 0, <br /> LWastewater Collection -M Recipient of Collected Wastewater <br /> Volume of <br /> Wastewater <br /> Name of Wastewater Wastewater Collected from Name of Wastewater Treatment Is WWTP <br /> Collection Agency Volume Metered or UWMP Service Plant(WWTP)and Place Located Within <br /> Estimated? Area 2025 ID Number UWMP Area? <br /> (AF) <br /> City of Santa Ana Estimated 21,217 OCSD Plant 1, Place ID 758392 No <br /> OCSD Plant 2, Place ID 259158 No <br /> Total Wastewater Received from UWMP 21,217 <br /> Service Area in 2025: <br /> NOTES:Assumed a return rate of 65% (City of Santa Ana,2020) <br /> 6.6.3 Current Recycled Water Uses <br /> The City provides OCWD GAP recycled water to the southern part of the City. In FY 2024-25, <br /> approximately 294 AF of GAP water was used in the City's service area. Projected recycled water use is <br /> expected to remain constant. Current and projected recycled water use through 2050 is shown in <br /> Table 6.11. The current users/uses of recycled water are as follows: <br /> ■ Centennial Park and Soccer Fields. <br /> ■ Bomo Koral Park. <br /> ■ Flower Street Bike Trail. <br /> ■ McFadden Intermediate School. <br /> CITY OF SANTA ANA <br />