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WATER CONSERVATION PLAN 2008 1997 through 2006 based on the sum of residential and multifamily demand divided by the total service population. Since not all of the residential customers were metered until 2006, the annual demand for this customer class was adjusted to account for the number of meters not installed during any one year. Residential per capita water use from 1997 to 2006 is summarized in Table 12 below. The average residential per capita water use from 1997 to 2006, as shown in the Table 12 was 107 gpcd. However, the 2002 to 2003 drought artificially reduced per capita water use in the years 2003 to 2005. Removing the drought - influenced demand years from the calculation, the average residential per capita water use was 112 gpcd. The range of residential per capita water use since 1997 was 93 to 122 gpcd. In order to illustrate this potential range of residential per capita water use the value of 90 gpcd has also been included in graphs and tables throughout this section, but has only been applied to the new population and not to the existing population. For purposes of evaluating water conservation measures and programs the residential and multifamily demand was forecasted using the average (non - drought influenced) residential per capita water use of 103 gpcd applied to the population projections, assuming that the current water conservation programs would remain in place and that average residential water use would remain at this level. TABLE 12 Residential Per Capita Water Use (Residential and Multifamily demand) Year Residential +Multifamily Annual Treated Residential Per Capita Water Demand (MG) Water Use (gpcd) 1997 21479 112 1998 21821 122 1999 21611 108 2000 31167 117 2001 37040 108 20021 37124 109 20031 2 27919 100 2004 21772 93 20052 21961 97 2006 31390 109 2007 31296 104 1 Watering restrictions in place August 2002 through Spring 2003. 2 Year potentially influenced by drought. 25