IRWD’s 2025 UWMP, is organized in accordance with UWMP Guidebook and contains the following sections:
Section 1: Introduction The introduction provides an overview of the UWMP history, purpose and fundamental requirements. Section 2: Plan Preparation The plan preparation section identifies IRWD’s 2025 UWMP as an individual planning document, indicates the type of year and units of measure used, and describes the outreach and coordination efforts conducted to develop the final 2025 UWMP. Section 3: Service Area Description IRWD’s water supply system is described at length including an extended IRWD background, service area boundaries, population projections, demographics, climatic conditions, and projected land uses for the IRWD service area. Section 4: Water Use Characterization Water use characterization provides historic and current water use, as well as water use projections for the next 20 years. This section includes the methods used to develop IRWD’s water supply and demand projections. Section 5: SBX7-7 Baselines and Targets This section reviews IRWD’s SBX7-7 baselines and targets and demonstrates IRWD’s compliance with the 2020 conservation targets. Section 6: System Supplies This section walks through IRWD’s water system supply portfolio including planned and potential water projects. These potential projects include water transfer and exchange opportunities, local water project coordination efforts, and expanded recycled water options. Section 7: Water Supply Reliability and Drought Risk Assessment An essential section of the 2025 UWMP, Water Supply Reliability and the Drought Risk Assessment (DRA) are included to assess the reliability of IRWD’s supply sources for normal, single-dry, and five-consecutive-dry year conditions. This section includes the new DRA analysis for a consecutive five-year drought period beginning in 2021. Section 8: Water Shortage Contingency Plan This section briefly summarizes the main components of the Water Shortage Contingency Plan (WSCP), past implementation, new requirements, and the process by which IRWD will update the WSCP in the future. The WSCP is included as a separate document in Appendix E.
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IRWD – 2025 Urban Water Management Plan
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