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<br />records that there are at times large differences between total raw <br /> <br /> <br />water received and total water accounted for. The ratio of water <br /> <br /> <br />accounted for to raw water received averaged 81% for the three year <br /> <br /> <br />period, and ranged from 40% to over 100% during monthly periods. <br /> <br />, <br />, <br />I <br />I <br />j <br /> <br />After discussions with personnel of Public Service Company and <br />a visit to the treatment plant, it is believed that the primary reason <br />for the large differences is due to inaccuracies at times in the plant <br />water metering instruments. It is I ikely that some water is lost <br />between plant and customer, but we believe that the 81% efficiency <br />figure i6 inaccurate because of the wide variation observed in the <br />monthly data. Accordingly, an allowance of 15% for unaccounted-for <br />losses corresponding to an efficiency of 85% was adopted for use in <br />this study. This amount or less was observed in 15 of the 36 months <br />studied. <br /> <br />" <br /> <br />l <br />:1 <br />, <br /> <br />:'1 <br />, <br /> <br />A summary of water delivered by the Evergreen System duriog 1978 <br /> <br /> <br />is shown in Table 3. These figures include only water accounted for <br /> <br /> <br />during the year and, therefore, do not include all losses attributed <br /> <br /> <br />to apparent differences between raw water received and water delivered <br /> <br /> <br />to. the customer. The Hlwan Golf Course irrigation water is included. <br /> <br /> <br />Where appropriate, sales data was adjusted to more accurately represeot <br /> <br /> <br />the time of consumption. <br /> <br />,I <br />1 <br /> <br />:1 <br /> <br />Largest maximum monthly usage during 1978 occurred in August <br /> <br /> <br />wheo approximately 36.7 million gallons was consumed at an average <br /> <br /> <br />rate of 1.84 cfs. The highest daily plant production was on July <br /> <br /> <br />26, when the system delivered 1.758 mill ion gallons at an average <br /> <br /> <br />rate of 2.72 cfs. Average rate of consumption for non-irrigation <br /> <br /> <br />months, January through April and November through December, was <br /> <br /> <br />0.766 cfs for the 2,390 equivalent taps within the system. This <br /> <br /> <br />represents a use of 207 gallons per day per tap or 59 gallons per <br /> <br /> <br />capita per day (gped) assuming 3.5 persons per tap which converts <br /> <br /> <br />to 0.321 cfs per l,OOO taps. The rate of 59 gallons per capita per <br /> <br />I <br />I <br />: 1 <br /> <br />-8- <br /> <br />.! <br /> <br />.1 <br />