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CHAPTER 6 ANALYSIS OF PRESENT AND FUTURE WATER SYSTEM NEEDS 6.1 GENERAL A water system is comprised of three major components— supply, storage and distribution. Each of these components must be adequate to meet the water demands placed on the system. This chapter analyzes each of the three components' capability of meeting the current and projected demands. Where the system is inadequate, new facilities have been recommended. 6.2 ANALYSIS OF FUTURE DEMAND Future water demand is based on residential, commercial, industrial, and institutional growth. This growth will depend on overall City growth with respect to population, industry, commerce and institutions, the spatial distribution of such growth according to land use planning, and the water consumption trends of different types of water users. In order to estimate future use, the following assumptions were used: 1 Centerville's population, in particular its service population, will continue to grow in accordance with the Metropolitan Council's projections as described in Chapter 2. 2. Using average data from the past seven years as a basis, residential per capita water use will remain at 60 gpcd. This assumes that any additional per capita water use that may occur because of new homes with automatic sprinklers will be offset by future water conservation measures. The peak to average day ratio will remain at 3.10. 3. The total number of industrially developed acres will increase from 7 acres to 63 acres by the year 2020. All industrial use will be that of a dry industry with per acre water use with a maximum of 1,000 gallons per acre per day (gpad). The peak to average ratio will remain constant at 2.25. 4. The total number of commercially developed acres will increase from 26 acres to 59 acres by the year 2020. All commercial use will have a maximum of approximately 1,000 gallons per acre per day (gpad) water use. The peak to average ratio will remain constant at 2.25. 5. Institutional water use will be only for the Centerville Elementary School. Based on 1995 data, water use will be approximately 6,250 gallons per day. It is assumed that this will remain constant through the year 2020. The peak to average day ratio will remain constant at an estimated 2.25. 6. Unaccounted -for water use will increase slightly from approximately 3.0 gpcd to 5.5 gpci by 2020. As Centerville's relatively new distribution system ages, it is reasonable tit expect a small increase in losses to occur, "priman'ly in the form of watermain leaks an& CWP- 260A.080 6-1 260- 080 -25