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• CHAPTER 8 WATER CONSERVATION PLAN 8.1 INTRODUCTION The purpose of the Water Conservation Plan is to provide the City with a procedure for optimizing the available water resources. Short -term water conservation can be accomplished by implementing the emergency procedures presented in Chapter 7. Long -term water conservation is an important part in managing available water resources. 8.2 ROLE OF CONSERVATION An effective conservation program will increase efficient water use, decrease water demand, and determine and address water loss and wasted water problems. By reducing total water use and increasing the efficiency of water use, a Water Utility can often postpone development of new sources, and decrease operations costs such as energy (pumping) and chemical costs. Since peak demands can affect energy costs and storage requirements, the ultimate goal will be to reduce peak water use. 8.3 WATER CONSERVATION POTENTIAL Each of the City's customer categories has been analyzed to determine the best potential for water conservation. During this analysis, it was determined that residential use accounts for 99.4% of the total, while commerciajindustrial /institutional use accounts for 0.6% of total use. These water use percentages have been fairly consistent since commercial/industrial use first occurred in Centerville in 1992. The residential customer category was selected as having the most potential for water conservation because of the total water volume used and the potential for reducing peak use. Another potential area for water conservation is unaccounted -for water use. Factors in unaccounted -for water use include watermain leaks, meter under - registration, unmetered connections, irrigation, watermain flushing and testing, and fire department use. The total potential for unaccounted -for water use conservation is dependent on where the water is going. For example, there typically is little potential to reduce fire department use. °Since Centerville's .. unaccounted -for use is approximately 2.3 %, there is minimal potential to reduce unaccounted -for use. It is anticipated that much of the potential growth in Centerville will be residential growth, and that many of these new customers will have automatic sprinkler systems. Per capita use typically increases as the number of automatic sprinkler systems increases. The City plans to implement future water conservation policies so as to counteract the potential per capital increase from more automatic sprinkler systems. It is the City's goal to maintain per capita water consumption at 60 gpcd and to maintain the ratio of peak day to average day demand at 3.10 over the next ten years. CWP- 260A.080 8 -1 260 -080 -25