Final Report, 2010 Urban Water Management Plan - Culver City

Section 10608.20(e) states the following:Section 10608.20.(e) An urban retail water supplier shall include in its urban water management plan required pursuant toPart 2.6 (commencing with Section 10610) due in 2010 the baseline daily per capita water use, urban wateruse target, interim urban water use target, and compliance daily per capita water use, along with the bases fordetermining those estimates, including references to supporting data.This chapter presents an analysis of water use data with the resulting projections for futurewater needs and water use targets in accordance with SBX7-7 for the Culver City System.3.1 Historical Water UseHistorical water use data from 1994 to 2010 were analyzed in order to provide an overview ofhistorical water usage for the Culver City System. Figure 3-1 shows the historical number ofmetered service connections and water use for the Culver City System from 1994 through 2010.8,00010,000Water Use (ac-ft/yr)7,5007,0006,5006,0005,5005,00020112010200920089,7509,5009,2509,0008,7508,5008,250Service Connections8,00020012000Year1999199819971996199519941993Water Use (ac-ft/yr)200720062005200420032002Active Number of ConnectionsFigure 3-1:Historical Number of Metered Service Connections and Water UseFigure 3-1 shows a decline in water use beginning in 2007 with an approximate 13 percentdecline from 2008 to 2010. Review of similar data from other systems suggests the recentdecline in water use has been widespread and is not isolated to the Culver City System. Thedecline in water use is not yet fully understood, but may be a result of several factors including:several years of cool summers, a statewide drought that forced mandatory water reductions andconservation in many areas, and an economic downturn that has caused many businesses toclose and increased housing vacancies.The customer billing data for the system consists of annual water sales data. The water salesdata was sorted by customer type using the assigned North American Industry ClassificationPage 3-2Final Report, 2010 Urban Water Management Plan – Culver CityGolden State Water Companyg:\adminasst\jobs\2010\1070001.00_gswc-uwmp\09-reports\9.09-reports\2011-08\grp3\gswc_culvercity_2010_uwmp-final.doc