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<br />5. DISTRIBUTION SYSTEM LEAK REPAIR <br /> <br />) <br /> <br />The Ken-Caryl Ranch Water and Sanitation District water system is <br />relatively new (20 years) and leaks within the system are <br />relatively minor. Most of the problems have been line breakage <br />or ruptures where lines are located in corrosive and/or expansive <br />soils. Some of the District's lines are made from an asbestos <br />cement material and leak detection equipment has a difficult time <br />pinpointing leaks in AC pipe. <br /> <br />LEAK DETECTION <br /> <br />The District is in the process of evaluating the various methods <br />and technologies of leak detection available in the water <br />industry. As soon as that decision is made we will probably <br />implement a leak detection schedule that will allow us to <br />traverse our water line system every 5 years or sooner if the <br />unaccounted for water loss becomes a factor. <br /> <br />The District currently utilizes the "Leak Detection" department <br />of the Denver Water Department or that of an independent service <br />as needed. <br /> <br />REPAIR AND MAINTENANCE <br /> <br />The District's program of meter maintenance has been very <br />effective in assuring the accuracy of our customer's water <br />meters. In the past two years most of the older meters used by <br />the commercial and irrigation customers have been replaced. <br /> <br />The District has an ongoing program to check the meter reading <br />inside the building with the remote reading outside the building. <br />A postcard survey system has been implemented whereby the <br />customer records the inside reading and outside reading; mails <br />the postcard back to the District where a review reveals any <br />significant difference. When a significant difference occurs the <br />meter is replaced and an adjustment in water use noted. <br /> <br />Since the District is relatively new, water line replacement is <br />on an as needed basi's and usually occurs ~nareas-where corros~ve' <br />and or expansive soils are prevalent. <br /> <br />UNACCOUNTED FOR WATER LOSS <br /> <br />Unaccounted for water loss is the report card on the distribution <br />systems performance. <br /> <br />The AWWA (American Water Works Association) Standards Committee <br />is in the process of reviewing the standard for an acceptable <br />percentage for "unaccounted for water loss". At this time a loss <br />of from 10 to 15% per year is considered acceptable. <br /> <br />9 <br />