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Section 5 <br />Identification of Future Water and Capital Improvement Needs <br />Forecasting future treated water demands and groundwater production helped to <br />characterize some of the limitations that exist regarding the City's future water supply <br />needs. Critical infrastructure limitations exist for the City with regard to water treatment <br />plant peak daily production capacity, and groundwater production capacity both of <br />which may require substantial expansion within the next decade. <br />Appropriate water conservation activities may be able to extend the time before new <br />facilities are needed by reducing demand, especially in the summer months, through a <br />reduction in outdoor irrigation. Decisions therefore need to be made regarding how and <br />when new facilities will need to be planned and constructed. Specifically, the City will <br />need: <br />• Additional groundwater production wells, with the appropriate augmentation <br />water to off set depletions; and <br />• New and/ or expanded water and wastewater treatment facilities. <br />The costs for these new and/ or expanded facilities are variable. For example, the City has <br />just completed preliminary water treatment plant siting study. Based on this study1, the <br />City is expected to expand its water treatment capacity in phases up to 24 mgd with the <br />first phase including a 6 to 8 mgd expansion at an estimated cost of about $16 to 18 <br />million. Debt service on this expansion is expected to run close to $90,000 per month f or 30 <br />years at 5 % interest. <br />Groundwater production facilities, brine disposal and required transmission and <br />distribution lines will add costs to the water treatment plant infrastructure improvements. <br />The expansion of the northwest well field currently being planned by the City will cost $4 <br />to 6 million, excluding the cost of the augmentation water. Total debt service for these <br />water related f uture supply and infrastructure costs may therefore come to about $150,000 <br />per month, or nearly $2 million per year. <br />The timing of when the City will be encumbered with this debt service is somewhat in <br />question; however, by 2012 the City's annual water supply for potable use will be near its <br />limit. Daily treated water peak daily demand f or summertime usage is predicted to be <br />greater than current treatment capacity as early as 2012. Therefore, water conservation <br />measures and programs will need to be implemented as soon as possible to effectively <br />postpone the debt service and stretch the City's water supplies. For example, an overall <br />reduction of current water demand by 7% in the next ten years will postpone the need for <br />these various capital projects by two to four years. <br />1 Burns and McDonnell, Brighton Siting Study, 2007 <br />City of Brightofi Water Conservation Plan 16 <br />