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2025 URBAN WATER MANAGEMENT PLAN <br /> MAY 2026/FINAL DRAFT/CAROLLO <br /> CHAPTER 8WATER SHORTAGE CONTINGENCY <br /> PLANNING <br /> 8.1 Background <br /> Water shortage contingency planning is a strategic planning process that the City of Santa Ana (City) <br /> engages in to prepare for and respond to water shortages.A water shortage is defined as when available <br /> water supply is insufficient to meet the customer demand at a given point in time.This may occur due to <br /> water supply availability changes, drought, climate change, water quality changes, and/or catastrophic <br /> events (e.g., major earthquake).The Water Shortage Contingency Plan (WSCP), included in Appendix F <br /> and summarized in this chapter, provides a water supply availability assessment and structured steps <br /> designed to respond to actual conditions.This level of detailed planning and preparation is intended to <br /> help maintain reliable supplies and reduce the impacts of supply interruptions. <br /> The Water Code Section 10632 requires that every urban water supplier that serves more than <br /> 3,000 acre-feet per year, or has more than 3,000 connections, prepare and adopt a standalone WSCP as <br /> part of its Urban Water Management Plan (UWMP).The WSCP is required to plan for a greater than <br /> 50 percent supply shortage.The WSCP may require updating based on new California Department of <br /> Water Resources (DWR) requirements every five years and will be adopted as a current update for <br /> submission to DWR by July 1, 2026. <br /> 8.2 Overview of the Water Shortage Contingency Plan <br /> The WSCP serves as the operating manual that the City will use to prevent catastrophic service disruptions <br /> through proactive, rather than reactive, mitigation of water shortages.The WSCP defines the processes <br /> and procedures that would be deployed when shortage conditions arise so that the City's governing <br /> body, its staff, and the public can easily identify and efficiently implement predetermined steps to <br /> mitigate a water shortage to the level appropriate for the degree of water shortfall anticipated.The <br /> relationship between the three procedural documents related to planning for and responding to water <br /> shortages, the UWMP,the WSCP, and the WSCP Ordinance, is graphically depicted in Figure 8.1. <br /> CITY OF SANTA ANA <br />