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<br />additional costs of high-efficiency toilets, landscaping changes, and leak repair, <br />among others, that Denver Water does not pay in incentives and rebates. <br /> <br />Figure 2 - Tap-Smart Conservation Plan Costs by Measure Type <br />Existing Customers <br /> <br />Total Costs - $381 million <br /> <br />Regulations <br />13% <br /> <br />Communication <br />5% <br /> <br /> <br />Rebates I <br />Incentives <br />67% <br /> <br />Natural Replacement <br /> <br />The demand reductions displayed in Figure 3 show the expected costs <br />differentiated by active conservation and "natural replacement." Natural <br />replacement (the replacement of toilets, showerheads and faucets as they wear <br />out or break) to federally mandated efficient fixtures, has been accelerated in the <br />Tap-Smart Plan. Under this revised Plan, the Board and its customers will spend <br />$57 million to replace these inefficient water fixtures. The drawbacks to <br />accelerating the replacement of these fixtures are the costs to the Board that it <br />otherwise would not have to spend and the replacement of fixtures that are fully <br />functional but not efficient. The benefits of accelerating natural replacement of <br />devices and fixtures are fuller reservoirs which may help to mitigate the effect of <br />future droughts, and the potential for delaying new supply projects by several <br />years. <br /> <br />Figure 3 - Tap-Smart Plan Costs <br />Existing Customers <br /> <br />13 <br />