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Table 2-13: Calculated Zone 7 Water Supply Cost
<br />Line Water Supply Cost FY 2024 FY 2025 FY2026
<br />1 Water Loss 10% 10% 10°0 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 $10,540,620
<br />8
<br />9 Variable Charge($/ccf)
<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
<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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