Item 08 - Water and Sewer Rate Adjustments

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The insurance escalation factor is derived solely from the Federal Reserve Bank of St. Louis' Producer Price Index for insurance premiums. This index tracks the insurance costs for both liability and property coverage for businesses in the United States. Table 13. Expense Escalation Factors Payroll 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% Other Employee 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% 4.1% Utilities 7.8% 7.8% 7.8% 7.8% 7.8% 4.3% 4.3% 4.3% 4.3% 4.3% 4.3% Chemicals 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% 6.1% Water Treatment 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% 5.2% Fuel/Automobile 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% Construction 5.1 % 5.1 % 5.1 % 3.9% 3.9% 3.9% 3.9% 3.9% 3.9% 3.9% 3.9% Insurance 9.6% 9.6% 8.8% 6.4% 6.4% 4.3% 3.0% 3.0% 3.0% 3.0% 3.0% Overall 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% 3.4% Equipment 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% MWD 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% 5.6% OCWD 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% 3.3% Customer Growth Customer growth projections were developed based on an analysis of historical billing records and long- term growth trends observed within the City. Additionally, per -account water use was assumed to remain stable throughout the study period. Water There are currently approximately 47,100 water meters connected to the City's water system, which includes fireline and recycled water meters in addition to the around 45,500 potable water meters. In ten years, 47,627 meters are projected. A total of 269 new Water Service connections are projected to join the water system during the 5-year rate setting period, approximately 53 per year. Figure 3 shows the annual water customer growth for the study period. Table 14 shows the projected number of meters for all customer classes during the rate setting period. City of Santa Ana - 2026 Water and Sewer Rate Study 12