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<br />ACWW A sizes their non-tributary wells to meet peak demands without contributions from the <br />tributary well sources because of uncertain yields in the Cherry Creek alluvium. Full use is made <br />of the alluvial well system whenever tributary flows are available. <br />The following table describes historic and projected water demands based on ACWW A water use <br />records and forecasts recently modified by King and Associates. These projections are for total <br />water demands and the full implementation of the non-potable water system is expected to reduce <br />the demands on non-tributary groundwater resources by between 35 and 40 percent. <br />Table A-I - AcWW A Water Demands without Nonpotable Water System <br />Year Service SFE Annual Water Average Day <br /> Population Connections Delivered (gpm) <br /> (Ac-ft) <br />1999 9500 3280 1970 1225 <br />2005 22200 7660 4600 2850 <br />2015 29700 10240 6150 3810 <br />Ultimate 46450 16020 9510 5960 <br />The following two tables describe the water demands on the AC\VW A water system if adjacent <br />Douglas County areas are incorporated as well as the reduced potable water demands that could <br />be realized if the nonpotable water systems was fully implemented. <br />Table A-2 - AcWW A (plus adjacent Douglas County service area) Water Demands without <br /> Nonpotable Water System <br />Year Service SFE Annual Water Average Day <br /> Population Connections Delivered (gpm) <br /> (Ac-ft) <br />1999 10380 3580 2147 1330 <br />2005 24140 8325 4995 7690 <br />2015 32400 11170 6700 4150 <br />Ultimate 53650 18500 11100 6890 <br />Table A-3 - AcWW A (plus adjacent Douglas County service area) Potable Water Demands <br /> with Nonpotable Water System <br />Year Annual Water Average Day Reduction in Potable Water Demand <br /> Delivered (gpm) (Ac-Ft) <br /> (Ac-ft) <br />1999 1680 1040 467 <br />2005 3410 2120 1585 <br />2015 4460 2770 2240 <br />Ultimate 7120 4420 3980 <br />Recent master plan projections indicate that ACWW A will need to develop an additional 2,000 to <br />4,000 acre-feet of uninterruptible potable water service to meet dry year and ultimate build-out <br />conditions. <br />Because of increasing pollutant loads in the Cherry Creek basin, ACWWA is planning on <br />developing a nano-filtration membrane plant to treat alluvial groundwater sources to meet <br />