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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> Table 4.4 Submittal Table 4-3 Retail: Inclusion in Water Use Projections <br /> Submittal Table 4-3 Retail: Inclusion in Water Use Projections <br /> Water Code Section 0, i. i. <br /> Are Future Water Savings Included in Projections? <br /> Drop down list(y/n) Yes <br /> If"Yes"to above, state the section or page number, in the cell to the right,where citations of the <br /> codes, ordinances, or otherwise are utilized in demand projections are found. Chapter 4.3 <br /> Optional Suppliers may complete Optional Submittal Table 4-4 R to quantify the expected savings. <br /> Are Lower Income Residential Demands Included In Projections? Yes <br /> Drop down list(y/n) <br /> Optional If the method for accounting Lower Income Residential Demands has been included, Chapter 4.3 <br /> provide page number where this accounting can be found. <br /> DWR NOTES:Additional guidance is provided in Appendix K. <br /> NOTES: Future water savings include passive conservation (defined as water savings that occur without incentives). <br /> Active conservation (defined as water savings that occur with incentives)is not included in the projections. <br /> The demand projection methodology accounted for the entire population of the service area(i.e.,all income levels). <br /> Table 4.5 Submittal Table 4-4 Retail: Passive Water Savings Projections <br /> OPTIONAL <br /> Water Code Section 06 <br /> Description Passive savings <br /> (Codes, Standards, Ordinances,or Plans) 2030(AF) 2035(AF) 2040(AF) 2045(AF) 2050(opt) <br /> AF <br /> Passive Water Savings 389 391 393 392 390 <br /> DWR NOTES: Units of measure(AF,CCF, MG)must remain consistent throughout the UWMP as reported in Submittal <br /> Table 2-3. This table identifies the unit of measure selected in Submittal Table 2-3. <br /> NOTES: Passive conservation here is defined as water savings that occur without incentives(e.g., installing water- <br /> efficient technologies such as drip irrigation systems). Based on the 2025 Orange County Water Demand Projection <br /> Model, passive conservation is assumed to equal a 1.9%decrease in residential demand due to conservation by 2030 <br /> (linearly extrapolated),then remains constant in subsequent years. <br /> 4.2.2.1 Direct Municipal and Industrial Use <br /> Potable Municipal and Industrial Use <br /> As shown in Table 4.3, the total potable water demands are projected to be 31,920 AF by the year 2050, <br /> an increase of about 0.8 percent between 2030 and 2050. It is projected that combined single- and <br /> multi-family residential water use will account for 64 percent of total potable water demand, commercial <br /> water use is expected to account for 25.4 percent, and landscape irrigation water use will account for <br /> 5.4 percent of total potable water use in the City by 2050. Other uses are expected to account for <br /> 1 percent of total potable water use by 2050 while distribution system water loss is expected to account <br /> for 4.3 percent of total potable water use. <br /> CITY OF SANTA ANA <br />