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<br />001087 <br /> <br />Draft - 9/81 <br /> <br />Given these two offsetting trends,it seems unlikely that per <br /> <br />capita demand for treated water for domestic use will change <br /> <br />dramatically in the foreseeable future. <br /> <br />Most water used indoors flows down a drain into the sewage <br /> <br />system where it can be treated and made available to further <br /> <br />users. <br /> <br />The small amount consumed is mostly through evaporation <br /> <br />in cooking and cleaning. <br /> <br />It is doubtful that the indoor use of <br /> <br />water actually consumes more than 2 to 3 percent of the total <br /> <br />amount utilized. <br /> <br />For the purposes of this analysis, however, and <br /> <br />, <br /> <br />in order to be certain that "worst case" assumptions are used for <br /> <br />this relatively minor consumptive use of water, a 5 percent con- <br /> <br />sumption factor will be assumed for those supplies which are used <br /> <br />indoors. <br /> <br />Since the assumption has been made that 200 gcd are used for i <br />........ <br />all purposes, the question then becomes what percentage of total <br /> <br />use is accounted for by indoor use? At the present time, the <br /> <br />average use of water for indoor purposes in Front Range commun- <br /> <br />ities is estimated to be about 85-90 gcd. <br /> <br />The higher figure, 90 <br /> <br />gcd, is 4-5 percent of the 200 gcd assumed total demand. The <br /> <br />formula for daily consumption per capita thus becomes: <br /> <br />(200 gcd) <br />(assumed <br />total <br />withdrawals) <br /> <br />x ( .05) x <br />(assumed <br />'consumption <br />factor) <br /> <br />( .4-5) = <br />( assumed <br />% of total <br />withdrawal) <br /> <br />4-.5 gcd <br />(consumption) <br /> <br />6 <br />