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City of Northglenn 2007 Water Conservation Plan Northglenn began operating a municipal water system in 1980. As of December 2006, the City had approximately 10,334 customer accounts: 8,819 single family residences, 877 townhomes, 136 apartments, 413 commercial and industrial, 24 schools, and 65 municipal connections. Table 1 provides the number of customers by type of account (i.e. customer class) and the Equivalent Residential Units (EQRs) for each. The City defines an EQR as the average annual volume of treated water supplied to a detached, single family, residential unit account within the City. EQRs are updated annually and are calculated as the five year rolling average of annual water consumption by single family accounts divided by the number of single family homes. For other customer classes, the number of EQRs is calculated by dividing the total water consumed by the five-year rolling average of single family home water use (as described above). Using EQRs is one way in which the City can compare water use between customer classes. During the 2001 to 2006 period, the total number of all accounts increased by 289 or 2.90/0 and EQRs increased by 6.790/0 during the same period. Northglenn does not provide water service outside of its City limits. T bl 1 2001 d 2006 C.t f N rth I W t U b A tT a e an I ~y 0 0 19 enn a er sers IY ccoun ype Single Com mercial Family Townhome Apartment & Industrial School Municipal Total o 1# of Accounts 8,697 783 110 364 26 65 10,045 ~ 1 EQRs 8,621 727 2,199 1,980 425 578 14,530 CD 1# of Accounts 8,819 877 136 413 24 65 1 0,334 0 ~ 1 EQRs 8,798 848 2,461 2,369 375 666 15,516 Table 2, which is the CWCB's worksheet 1-1, provides a summary of the City's Water System, including information on supplies, accounts, water use, sales and demands during 2006. Section A of this table provides general information on the City's system. Section B provides information on water supplies, which are primarily derived from surface water sources. The City's average year supply is approximately 2.25 billion gallons while 2006 total water use was around 1.88 billion gallons. Water use by type of service connection (or account), 1000Jb of which are metered, is broken down in Section C. Residential use, which includes both single and multi-family accounts, accounted for 720/0 of the total water use in 2006. However, use by connection for residential accounts was much lower than for nonresidential and municipal accounts. Total dollar amounts billed by account type are also shown. The City's supply capacity (volume of treated water that can be produced and delivered) currently exceeds average water demands so there is no immediate need to expand supplies. Two planning documents, the City's Integrated Resources Plan which is under development, and this Water Conservation Plan, will assist the City in planning to meet future demands at ultimate buildout. 3