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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> 4®2 Projected Water Use <br /> The water use projection for this UWMP is separated into a near-term period covering the next five years <br /> (2026-2030) and a long-term period extending from 2030 through 2050. <br /> The water use projection is based on the 2025 Orange County Water Demand Projection Model Technical <br /> Memorandum (TM), which is included Appendix H of this UWMP.The methodology used in this demand <br /> forecast links water use statistically to a set of explanatory variables through a regression, or econometric, <br /> model. Section 4.3 offers a description of the methodology used to calculate the City's demand <br /> projections. <br /> A .1 Water Use Projections for 2026-2030 <br /> Total demands (direct) are met through imported water(treated), groundwater, and recycled water.The <br /> City utilizes the projected total demands to incorporate the best available planning information when <br /> projecting the imported water demands of its service area. The City's total water demand projection for <br /> the next five years is shown in Table 4.2.As shown, the City's total service area water demands are <br /> expected to remain relatively flat, with a minor decrease over the next five years (2026 to 2030) due to a <br /> projected decline in the service area's municipal and industrial demands. <br /> Table 4.2 City of Santa Ana's Service Area Total Potable and Non-Potable Demand for 2026-2030 <br /> Fiscal Year Ending <br /> 1 . 1 1 1 • 1 1 <br /> Total Water Demand (AF) 32,504 32,335 32,243 32,000 31,908 <br /> d_a,2 Water Use Projections for 2030-20r9 <br /> The City's service area's total water demands (by use type) for the next 25 years are shown in Table 4.3. By <br /> 2050, total water demand is projected to be 32,167 AF, a 2.3 percent decrease from the 2025 demand of <br /> 32,935 AFY.Table 4.4 indicates additional information for both future conservation efforts and low- <br /> income water demands included in the projections,while Table 4.5 presents the passive water savings <br /> included in Table 4.3 projections for 2030-2050. <br /> CITY OF SANTA ANA <br />