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Section 3 | System Description
3.1 General Description
Law 10631(a) Describe the service area of the supplier, including current and projected population, climate, and other social, economic, and demographic factors affecting the supplier’s water management planning. The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier and shall be in five-year increments to 20 years or as far as data is available. The description shall include the current and projected land uses within the existing or anticipated service area affecting the supplier’s water management planning. Urban water suppliers shall coordinate with local or regional land use authorities to determine the most appropriate land use information, including, where appropriate, land use information obtained from local or regional land use authorities, as developed pursuant to Article 5 (commencing with Section 65300) of Chapter 3 of Division 1 of Title 7 of the Government Code. Section 3 provides a general description of IRWD’s formation, governance, location, services, climate, projected population and factors that could affect water management planning. This Section includes a brief description of IRWD’s available water supplies and how land use changes are incorporated into IRWD’s water resource planning. IRWD, a California Water District, formed in 1961, is an independent special district organized under the California Water District Code. IRWD provides potable and non-potable water supply, sewage collection, treatment and disposal, water recycling and urban runoff treatment services. As an independent, not-for-profit public agency, IRWD is governed by a publicly elected five- member Board of Directors (Board). Board members are elected from five divisions and serve four-year terms. The Board is responsible for the District's policies and decision-making. Day-to- day operations are supervised by the General Manager and IRWD staff. IRWD’s mission is to provide high quality water and sewer services in an efficient, cost effective, and environmentally sensitive manner which produces a high level of customer satisfaction. IRWD’s diverse portfolio of water resources ensure reliable supplies during times of drought, regulatory constraints, and emergencies as well as help keep rates low. IRWD is located in the south-central portion of Orange County ( Figure 3 - 1 ). Its service area includes all of the City of Irvine and portions of the surrounding cities of Tustin, Santa Ana, Orange, Costa Mesa, Lake Forest, Newport Beach, and unincorporated areas of the County of Orange. IRWD service area encompasses approximately 181-square miles service. As of 2025,
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IRWD – 2025 Urban Water Management Plan
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