Item 08 - Water and Sewer Rate Adjustments

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reservoirs, wells, and treatment plants, are designed and constructed to meet this capacity. If deficiencies are found, the existing facilities get upsized, or a secondary line or pump is installed. These peak demand costs should be allocated to those customers whose potential use generates additional costs for the utility, such as larger meters. In other words, not all customers share the same responsibility for capacity related costs. The percent of delivery capacity over an average day or base delivery was determined by using actual customer billing records. Table 35 shows the total water use. Table 36 shows actual potable customer water use by billing period. Table 37 shows the average and the highest bi-monthly potable water use divided by the number of days included in the period. The June billing period includes 61 days, so to calculate the daily use during the peak billing period, the total use in that period is divided by the increment. Table 35. Total Water Use by End User .. Potable 13,536,745 99.2% Recycled 106,800 0.8% Total 13,643,545 Table 36. System -Wide Potable Water Use by Billing Period in ccf" August 2,378,024 17.6% October 2,541,129 18.8% December 2,150,362 15.9% February 1,908,130 14.1 % April 1,903,888 14.1 % June 2,655,213 19.6% Total 13, 536,745 100% Table 37. Potable Water Use Divided by Billing Days in ccf 13, 536, 745 _ 365 = 37,087 2,655,213 - 61 = 43,528 Table 38 shows the systemwide capacity factors based on customer use patterns as described. Delivery capacity is equal to max day divided by average day. The percentage of delivery capacity over base delivery represents the additional capacity demands which create the need for upsizing system assets to "Total potable water use is based on FY 2025 billing records City of Santa Ana - 2026 Water and Sewer Rate Study 29