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<br />~ <br /> <br />average daily demands and recharges storage during off peak periods. Peak and fire <br />flow demands are met from storage. The existing water system consists of five (5) <br />separate pressure zones spanning elevation differentials of approximately 500 feet, <br />with pressure differentials from 50 to 110 psi. These zones are connected through <br />pressure reducing valves and booster pumps. The distribution system extends <br />through approximately twenty-seven square miles. <br /> <br />The operating criteria for the Town's water supply and distribution system includes <br />having pumping capability to sustain the maximum day demand throughout the year <br />without the need to rely on storage, short term peak demands (peak hour and fire <br />flow) should be met by storage capacity, sufficient storage should be available at all <br />times to meet fire flow demands, even during peak irrigation season, and individual <br />pressure zones should be capable of meeting maximum day and peak hour demands, <br />utilizing well supply and storage from within the zone. Peak demands can be the <br />area of difficulty faced by Castle Rock. The water is available, but the means to <br />distribute it to areas of highest demand can produce complications. Therefore <br />meeting the set criteria can be a challenge. <br /> <br />The Town's water production and delivery system has been severely strained prior <br />to 1989 during the summer irrigation period. These shortages have been created <br />by: <br />1) Failure of key well pumps, and booster pumps, due to age and condition <br />2) A poorly developed distribution system, resulting in constrictions at critical <br />points, and inadequate looping <br />3) A lack of storage capacity <br />4) Excessive peak demands placed on the system due to daily watering in the <br />summer months <br />5) Daily water production that is unable to keep pace with the excessive <br />demand placed on it during certain times of the summer irrigation season. <br /> <br />Significant progress has occurred with the completion of three storage tanks, the <br />drilling of non-tributary and tributary wells to supplement supply, building high <br />volume booster pumping stations, and line construction for improved looping, <br /> <br />In effort to further reduce peak demands, to control the amount of excess capacity <br />in the system to accommodate peak demands, to extend the usefulness of current <br />water treatment facilities, to reduce pumping and distribution costs, postpone and/ <br />or reduce acquisition of further water supplies and increase the longevity of current <br />non-renewable ground water sources, to reduce potable water treatment costs, and <br />to reduce wastewater flows, thus reducing wastewater treatment costs the Town <br />strives for new ways to conserve water. <br /> <br />Castle Rock serves approximately 8708 residents as per the 1990 census, At the end <br />of 1990, there were 2519 residential accounts, 221 commercial accounts, 94 multi. <br />family accounts, and 151 accounts made up of churches, schools, and municiple <br />accounts, Total production figures for 1990 were 1,740.9 acre feet, 81 % non-tributary <br />