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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> Table 7.7 Retail: Five-Year Drought Assessment <br /> TableSubmittal Drought <br /> Total Water Use (AF) 33,788 <br /> Total Supplies (AF) 33,788 <br /> Surplus/Shortfall w/o WSCP Action 0 <br /> 2027 Total <br /> Total Water Use (AF) 36,870 <br /> Total Supplies (AF) 36,870 <br /> Surplus/Shortfall w/o WSCP Action 0 <br /> 2028 <br /> • <br /> Total Water Use (AF) 37,100 <br /> Total Supplies (AF) 37,100 <br /> Surplus/Shortfall w/o WSCP Action 0 <br /> I <br /> Total Water Use (AF) 37,802 <br /> Total Supplies (AF) 37,802 <br /> Surplus/Shortfall w/o WSCP Action 0 <br /> 2030 IMTotal <br /> Total Water Use (AF) 38,444 <br /> Total Supplies (AF) 38,444 <br /> Surplus/Shortfall w/o WSCP Action 0 <br /> 7.5,3 Water Source Reliability <br /> Santa Ana's water supply portfolio is predominantly supported by the OC Basin,which provides roughly <br /> 85 percent of Santa Ana's water under the FY 2025-26 BPP and is expected to remain a reliable source <br /> through FY 2029-30. OCWD's active basin management, such as adjusting the BPP and securing <br /> supplemental recharge supplies, helps maintain long-term groundwater reliability. Local supply is further <br /> strengthened by Santa Ana's use of indirect potable reuse water from OCWD's GWRS,which enhances <br /> drought resilience.While emergency interconnections with neighboring agencies are not part of the <br /> normal supply mix, they offer additional backup capacity if ever needed. Santa Ana's DRA concludes that <br /> available supplies meet projected demands during a modeled five-year drought, with the ability to <br /> increase MET purchases if necessary. <br /> As detailed in Section 8, Santa Ana has in place a robust WSCP and comprehensive shortage response <br /> planning efforts that include demand reduction measures and supply augmentation actions. However, <br /> since Santa Ana's DRA shows a balance, no water service reliability concern is anticipated, and no shortfall <br /> mitigation measures are expected to be exercised over the next five years. Santa Ana and its wholesaler, <br /> MET,will periodically revisit its representation of the supply sources and of the gross water use estimated <br /> for each year, and will revise the DRA if needed. <br /> CITY OF SANTA ANA <br />