Water Committee Agenda and Packet 2015 04 03

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2 WATER DEMAND AND HISTORICAL DEMAND MANAGEMENT FIGURE 5 Historic and Forecast Population of Louisville from 2008 through 2032 23,000 22,000 21,000 20,000 19,000 c 18,000 17,000 a • 16,000 15,000 14,000 13,000 12,000 11,000 10,000 2010 US Census Adjustment 00 01 0 r1 N M ▪ u1 l0 N 00 Ol 0 M • u1 l0 n 00 01 0 O O c-1 N N N N N N N (N N N m m M O O O O 0 0 0 0 0 O 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 N N N N N N N N N N N N N N N N N N N N N N N N N - Historic - Forecast An analysis of recent water use data was performed to establish a starting point for the water demand forecasts. The minimum, maximum, and average water use for each customer category was calculated for each year from 2009 to 2013. These values were compared to the 2013 value. Engineering judgment was used to select the starting point for each customer category, guided by the intent to start the forecast at a value that was representative of recent demand but not too low or too high. A summary of the metered data for the last 5 years is shown in Table 11 (which was also provided Table 5), as well as a summary of the minimum, maximum, average, and baseline starting values. TABLE 11 Summary of Annual Authorized Water Use and Treated Water Production, 2009 to 2013 Residential Multifamily Commercial Irrigation Year Population Cityl (RESI +RESO) (MF) (COMI +COMO) (IRRI) Total Metered2 2009 - 0.43 540.89 79.31 219.59 81.77 922.00 2010 18,376 24.06 570.59 82.41 217.23 83.91 984.20 2011 18,410 20.86 596.29 86.46 225.92 89.04 1,018.55 2012 18,497 56.87 670.06 87.61 340.66 102.60 1,257.81 2013 18,584 190.17 549.00 77.04 218.42 83.47 1,116.90 5 -year min. 0.43 540.89 77.04 217.23 81.77 922.00 5 -year max. 190.17 670.06 87.61 340.66 102.60 1,257.81 WBG071714052946BS0 2 -15