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Table 2-13: Calculated Zone 7 Water Supply Cost
<br /> Line Water Supply Cost i I � 202',
<br /> 1 Water Loss 10% 10% 10% 10%
<br /> 2
<br /> 3 Zone 7 Water Agency Rates
<br /> 4 Fixed Charge($/year)
<br /> 5 First Half $7,785,058 $9,107,878 $9,654,351 $10,233,612
<br /> 6 Second Half $9,107,878 $9,654,351 $10,233,612 $10,847,628
<br /> 7 Average $8,446,468 $9,381,114 $9,943,981 $10,540,620
<br /> 8
<br /> 9 Variable Charge($/ccfl
<br /> 10 First Half $2.06 $2.27 $2.34 $2.44
<br /> 11 Second Half $2.27 $2.34 $2.44 $2.47
<br /> 12 Average $2.17 $2.31 $2.39 $2.46
<br /> 13
<br /> 14 Water Available(AF)
<br /> 15 City Wells 3,500 0 0 1,750
<br /> 16 Zone 7 Water Agency 0 0 0 0
<br /> 17 Total-Water Available(AF) 3,500 0 0 1,750
<br /> 18
<br /> 19 Water Demanded(AF) 13,864 11,552 11,959 12,381
<br /> 20 Water Produced(AF) 15,404 12,835 13,288 13,756
<br /> 21
<br /> 22 Water Production(AF)
<br /> 23 City Wells 3,500 0 0 1,750
<br /> 24 Zone 7 Water Agency 11,904 12,835 13,288 12,006
<br /> 25 Total-Water Production(AF) 15,404 12,835 13,288 13,756
<br /> 26 1
<br /> 27 Water Supply Costs
<br /> 28 Zone 7 Fixed Charges $8,446,468 $9,381,114 $9,943,981 $10,540,620
<br /> 29 Zone 7 Variable Charges $11,226,290 $12,887,414 $13,833,688 $12,839,371
<br /> 30 Total-Water Supply Costs $19,672,758 $22,268,528 $23,777,669 $23,379,991
<br /> The City purchases its recycled water from the Livermore Water Reclamation Plant(Livermore) and the DSRSD-
<br /> EBMUD Recycled Water Authority (DERWA). The water utility is charged a variable rate per ccf of recycled
<br /> water purchased from both agencies. Table 2-14 shows the reclaimed water cost. Recycled water demand is equal
<br /> to the total recycled water irrigation demand (Table 2-6). Recycled water produced is based on recycled water
<br /> demand accounting for water loss (Table 2-13, Line 1). The proportion of demand is based on the proportion of
<br /> recycled water purchased from each source. The production from each agency is calculated by multiplying the total
<br /> recycled water production with the percentage proportion of demand for each agency.
<br /> City staff provided Livermore and DERWA variable costs for FY 2023. These rates are inflated for future years
<br /> using the water escalation factor (Table 2-2, Line 5). Recycled water costs are calculated by multiplying the
<br /> recycled water produced from each source(Lines 13 and 14) by the variable recycled water cost for each agency.
<br /> WATER AND RECYCLED WATER RATE STUDY REPORT 21
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