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EST IM A T ED PO PU LA TIO N , SER V IC ES, AND W A T E R CONSUMPTION 1954 to 1990 Estimated Water Consumption Annual W ater Supply Average Daily Pumping Rate Year Estimated Population Estimated Number of Services i / Average / D aily© f (mg) Total Annual (mg) From Wells (mg) Lake Mead (mg) From Wells (m g) Lake Mead (mg) 1954 41,000® 12,800 v 15.2 5,550 5,550 0 15.2 0 1955 50,600® 15,800 18.7 6,830 5,850 980 16.0 2.7 1956 52,600 16,400 19.5 7,120 5,850 1,270 16.0 3.5 1957 54,600 17,100 20.2 7,370 5,850 1,520 16.0 4.2 1958 56,500 17,600 20.9 7,630 5,850 1,780 16.0 4.9 1959 58,500 18,300 21.6 7,880 5,850 2,030 16.0 5.6 1960 60,500 18,900 22.4 8,180 5,850 2,330 16.0 6.4 1961 62,300 19,500 23.0 8,400 5,850 2,550 16.0 7.0 1962 64,000 20,000 23.7 8,650 5,850 2,800 16.0 7.7 1963 65,800 20,600 24.3 8,870 5,850 3,020 16.0 8.3 1964 67,500 21,100 25.0 9,120 5,850 3,270 16.0 9.0 1965 69,300 21,600 25.6 9,340 5,850 3,490 16.0 9.6 1966 71,100 22,200 26.3 9,600 5,850 3,750 16.0 10.3 1967 72,800 22,700 26.9 9,820 5,850 3,970 16.0 10.9 1968 74,600 23,300 27.6 10,070 5,850 4,220 16.0 11.6 1969 76,300 23,800 28.2 10,300 5,850 4,450 16.0 12.2 1970 78,100 24,400 28.9 10,550 5,850 4,700 16.0 12.9 1971 79,200 24,800 29.3 10,700 5,850 4,850 16.0 13.3 1972 80,300 25,100 29.7 10,840 5,850 4,990 16.0 13.7 1973 81,400 25,400 30.1 10,990 5,990 5,000 16.4 13.7 1974 82,500 25,800 30.5 11,130 6,130 5,000 16.8 13.7 1975 83,600 26,100 30.9 11,280 6,280 5,000 17.2 13.7 1976 84,700 26,500 31.3 11,420 6,420 5,000 17.6 13.7 1977 85,800 26,800 31.7 11,570 6,570 5,000 18.0 13.7 1978 86,900 27,200 32.2 11,750 6,750 5,000 18.5 13.7 1979 88,000 27,500 32.6 11,900 6,900 5,000 18.9 13.7 1980 89,100 27,800 33.0 12,040 7,040 5,000 19.3 13.7 1981 90,200 28,200 33.4 12,190 7,190 5,000 19.7 13.7 1982 91,300 28,500 33.8 12,340 7,340 5,000 20.1 13.7 1983 92,400 28,900 34.2 12,480 7,480 5,000 20.5 13.7 1984 93,500 29,200 34.6 12,630 7,630 5,000 20.9 13.7 1985 94,600 29,600 35.0 12,780 7,780 5,000 21.3 13.7 1986 95,700 29,900 35.4 12,920 7,920 5,000 21.7 13.7 1987 96,800 30,200 35.8 13,070 8,070 5,000 22.1 13.7 1988 97,900 30,600 36.2 13,210 8,210 5,000 22.5 13.7 1989 99,000 30,900 36.6 13,360 8,360 5,000 22.9 13.7 1990 100,100 31,300 37.0 13,500 8,500 5,000 23.3 13.7 ® Estimated population of Las Vegas. © Population times 370 gallons per capita per day. © Las Vegas plus 10% (46,000 plus 4,600). m W E L L W A T E R COSTS As a basis for estimating future costs of the distribution system, the Montgomery report averaged the operating expenses of the Las Vegas Land and W ater Company for the period 1943-1952, converting the figures into costs per million gallons. Such costs as “Regulatory Commission Expenses,” “Pensions,” and “Taxes,” are not considered in the following table, because those expenses would not be applicable to the Las Vegas Valley W ater District. D ISTRIBU TIO N E X P E N S E S — LAS VEGAS LAND AND W A T E R COMPANY CO ST PER M ILLIO N G ALLO NS Distribution System Expense Year Maintenance Administrative and Office Salaries Gen. Office Supplies & Expenses Miscellaneous Expense Total 1943 $ 6.95, $7.58 $0.46 $1.08 $16.07 1944 6.57 6.85 0.73 0.92 15.07 1945 6.17 6.60 0.61 0.87 14.25 1946 5.66 5.96 0.43 0.81 12.86 1947 5.53 5.49 0.37 1.55 12.94 1948 5.46 5.66 0.44 1.19 12.75 1949 5.66 6.82 0.29 1.35 14.12 1950 9.89 6.60 0.88 5.55 ' 22.92' > o') (L-- 1951 12.98 8.85 1.67 4.90 28,40 ? r n - r r > i 1952 10.90 8.48 1.03 5.20 25.61 Average . $ 7.87 "i $6.93 $0.72 $2.61 $18.13 The average operating cost per million gallons, determined in the preceding tabulation to be $18.13, is assumed to be $20 in subsequent calculations^ This figure is based on a system operating on a flat-rate basis. If the dismEution system were metered, administrative costs would increase; but the increase would be more than offset by a decrease in production costs due to a lower per-capita use of water. Estimates of future production costs of well water are based on 1950 hearings of the Public Service Commission of Nevada concerning a request of the Las Vegas Land and W ater Company for an increase in rates. One of the findings of the hearings was that a reasonable charge to the Company by the Union Pacific Railroad for water production and transmission was $50,300 for 1950 (not including depreciation, taxes, and interest). This is a unit cost of $14.13 per million gallons. Since production costs increase as the water table is lowered, the future cost is assumed to be $15. L A K E MEAD W A T E R COSTS Distribution costs of Lake Mead water will be the same as distribution costs of well water— an estimated $ 2 0 per million gallons. The major portion of the cost of production and transmission of Lake Mead water will be power costs and the service charge provided for in the 1952 agreement between BMI and the District. A detailed analysis of the production and transmission costs of Lake Mead water and a copy of the 1952 agreement are contained in the Montgomery report. The report shows that these costs consist of the following: (1) the purchase price of the water; (2) BMI service charge for the use of the existing BMI water transmission facilities; (3) power cost for pumping; and (4 ) maintenance and operation costs of the water transmission line and the booster station supplying Las Vegas. 16