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City of Rifle Water Conservation Plan
<br />2.4
<br />Final Report -July 2008
<br />Individual Accounts with Highest Summer Use Rates
<br />Because reducing peak demands must be a primary goal for City of Rifle water
<br />conservation efforts, 2006 billing data were analyzed for largest peak season water users.
<br />The analysis identified the single accounts with the highest (>500 kgal) metered water
<br />volumes per unit per month for any meter reading conducted in either June, July, or
<br />August, the three months in which peak day demand is most likely to occur in Rifle.
<br />Figure 2-3 presents the findings. All are either government or large commercial entities,
<br />not individual residences. The total combined use of these 10 accounts accounted for
<br />7.6% of the total finished water produced in the three peak months of 2006. Targeting
<br />top peak demand season water users for water efficiency audits could be an effective
<br />peak demand reduction strategy for the City.
<br />Table 2-1:2006 Metered Water Use at Standard Service Connections
<br />
<br />
<br />Billing Category/
<br />Customer Class
<br />Number
<br />°f
<br />Accts.
<br />Number
<br />of Units Total Annual
<br />Water
<br />Volume
<br />Used
<br />Average
<br />Water
<br />Use Rate % of
<br />Standard
<br />Service
<br />Connection
<br />Total Vol.
<br /> (--) (--) allons) ( d/unit) %)
<br />Commercial 260 332 97,552,700 806 20
<br />Government 64 64 52,092,700 2,230 11
<br />City Building 8 8 4,440,300 1,521 0.9
<br />City PropertylPurks 13 13 13,840,000 2,917 2.9
<br />Other Governn~eut 32 32 17,801,400 1,524 3.7
<br />Pubhc School 11 11 16,011,000 3,988 3.3
<br />Industrial (excludes CoGen) 8 8 1,018,000 349 0.2
<br />Irrigation/Sprinkler 2 2 389,000 533 0.1
<br />Residential 2,857 3,635 332,618,000 251 69
<br />Duplex 1 Meter 48 96 5,949,600 170 1.2
<br />Duplex 2 Meters 63 63 4,244,000 185 0.9
<br />Mobile Home Park 20 322 36,435,000 310 7.5
<br />Multi Fum~ly Multi Meter 416 416 25,353,100 167 5.2
<br />Multi Fum~ly 1 Meter 74 502 27,159,600 148 5.6
<br />Single Family 2,236 2,236 233,476,700 286 48
<br />Total 3,191 4,041 483,670,400 328 100
<br />Potable System Water Balance and Lost Water
<br />Previous sections have presented trends and components of City of Rifle water use.
<br />Table 2-2 presents an estimated overall water balance for the City's potable system over
<br />the past five years. Because of missing, partial, or inaccurate data for various quantities
<br />in different years, numerous educated estimates and best assumptions were required to
<br />compile the table. However, Table 2-2 serves as a best available baseline water balance
<br />against which future values can be compared as the City pursues water conservation.
<br />Table 2-2 shows that the difference between treatment plant finished water production
<br />and accounted-for water use is estimated at 2 to 10% with roughly 12 to 19% of the raw
<br />water entering the treatment plants lost prior to a known end-use. Table 2-2 also shows
<br />that total annual retail water deliveries are approaching the 2,000 ac-ft mark, which will
<br />trigger the City to have an approved water conservation plan in place in order to remain
<br />eligible for certain State funding assistance programs.
<br />SGM # 99055A-388 16 Historic Water Use and Forecast Demand
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