Item 21 - Public Hearing - Resolutions Approving the 2025 Urban Water Management Plan and the 2025 Water Shortage Contingency Plan

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202S WATER SHORTAGE CONTINGENCY PLAN MAY 2026/FINAL DRAFT/CAROLLO contact partner agencies to inform them of the situation, activation status of the EOC, known damage or impacts, or resource needs.The EOP is a standalone document that is reviewed annually and approved by the MWDOC Board every three years. WEROC is organized on the basis that each member agency is responsible for developing its own EOP in accordance with the California Standardized Emergency Management System (SEMS), National Incident Management System (NIMS), and Public Health Security and Bioterrorism Preparedness and Response Act of 2002 to meet specific emergency needs within its service area. The WEROC EOC is responsible for assessing the overall condition and status of the Orange County regional water distribution and wastewater collection systems including MET facilities that serve Orange County.The EOC can be activated during an emergency situation resulting from both natural and manmade causes, and can be activated through automatic, manual, or standby for activation. WEROC recognizes four primary phases of emergency management, which include: ■ Preparedness: Planning, training, and exercises that are conducted prior to an emergency to support and enhance response to an emergency or disaster. ■ Response:Activities and programs designed to address the immediate and short-term effects of the onset of an emergency or disaster that helps to reduce effects to water infrastructure and speed recovery.This includes alert and notification, EOC activation, direction and control, and mutual aid. ■ Recovery:This phase involved restoring systems to normal, in which short-term recovery actions are taken to assess the damage and return vital life-support systems to minimum operating standards, while long-term recovery actions have the potential to continue for many years. ■ Mitigation/Prevention:These actions prevent the occurrence of an emergency or reduce the area's vulnerability in ways that minimize the adverse impacts of a disaster or emergency. The EOC Action Plans provide frameworks for EOC staff to respond to different situations with the objectives and steps required to complete them,which will in turn serve the WEROC member agencies. In the event of an emergency that results in a catastrophic water shortage, the City will declare a water shortage condition of up to Level 6 for the impacted area depending on the severity of the event, and coordination with WEROC is anticipated to begin at Level 4 or greater (WEROC, 2021). 3.4.5.3 City of Santa Ana Emergency Response Plan The City will also refer to its current American Water Infrastructure Act Risk and Resilience Assessment, Emergency Response Plan, and Local Hazard Mitigation Plan in the event of a locally isolated catastrophic supply interruption.The LHMP describes the City's approach to enhancing emergency services and protecting life and property, among other goals. The water supply specific mitigation measures include increased security, backup power, and reducing flooding risk at water facilities (Santa Ana, 2022). 3.4.6 seismic Risk Assessment and Mitigation Plan Per the Water Code Section 10632.5, Suppliers are required to assess seismic risk to water supplies as part of their WSCP. The plan also must include the mitigation plan for the seismic risk(s). Given the great distances that imported supplies travel to reach Orange County, the region is vulnerable to interruptions along hundreds of miles of aqueducts, pipelines and other facilities associated with delivering the supplies CITY OF SANTA ANA