Draft 2025 Urban Water Management Plan

2025 Orange County Water Demand Projection Model

The model output does not include projected active water conservation.

4.3 Baseline Sectoral Forecasts This section provides a summary of the baseline demand forecasts by each model sector. The model output does not include projected active water conservation. This section provides a summary of the baseline demand forecasts by each model sector. The baseline scenario results represent a projection of future water demand for Orange County, assuming no additional active conservation .

4.3.1

Forecast Expectations

Figure 4-4 summarizes the Orange County averaged annual demand projections as well as the historical values.

700,000

600,000

500,000

400,000

300,000

200,000

100,000

0

Other Demands (AFY) Commercial, Industrial, and Institutional Demand (AFY)

Irrigation Demand (AFY) Multifamily Demand (AFY) Single-family Demand (AFY) Historical

Figure 4-4: Total Orange County Demands

Annual county-wide single-family residential projected water demand values are projected to decrease from 2025 to 2030, then remain relatively constant through 2050. Multifamily residential projected water demand values are projected to steadily increase from 2025 through 2050. This increase is largely driven by rising multifamily housing units over time. CII demands are projected to steadily increase from 2025

4-9

Appendix G - 62

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