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<br />and Silver Lane NE to 33rd Ave NE and to the water tower at a length of approximately <br />7,600-feet. Flow meters would need to be installed inside the booster pumping stations to <br />record the volumes of water purchased from Minneapolis Water. Minneapolis Water <br />staff studied potential interconnections to its water distribution system and provided a <br />memorandum that summarizes this study (see Appendix A). The estimated time to <br />implement this option would be approximately two to three years. <br /> <br />Advantages <br />This option would provide the following advantages: <br /> <br />1. The City is no longer responsible for treatment and removal of TCE and Dioxane <br />from the drinking water supply. <br /> <br />2. City residents that currently have home water softeners would save on their <br />individual water softening costs. Minneapolis Water softens its drinking water to <br />approximately 80 parts per million (ppm) hardness or about 5 grains. Residential <br />customers that soften their water may save an average of $6.75 per month in salt <br />costs. <br /> <br />3. If the ability to draw from the Jordan Sandstone aquifer was retained, connecting <br />with the Minneapolis system would provide some redundancy in water supplies. <br /> <br />4. Does not rely on groundwater aquifers which are being closely monitored by the <br />DNR in portions of the Metro Area. <br /> <br />Disadvantages <br />This option would provide the following disadvantages: <br /> <br />1. The City currently controls its water quality. Purchasing water from Minneapolis <br />Water would relinquish this control to others while the City would not be able to <br />address water quality changes. <br /> <br />2. Surface waters, such as the Mississippi River, commonly contain emerging <br />contaminants’ which could pose a water quality concern if the EPA establishes <br />MCLs for these constituents within the water. For example, pharmaceuticals are <br />currently being studied by the EPA and could possibly require further treatment in <br />the future for drinking water that stems from a surface water supply. This <br />treatment process may result in an increase in the cost of water. <br /> <br />3. The City would lose control of its water rates by purchasing water from <br />Minneapolis Water. <br /> <br />4. The water quality of Minneapolis’ drinking water differs in qualit y than that <br />provided by the City of St. Anthony Village. <br /> <br /> <br />1,4-DIOXANE PROJECT <br />FEASIBILITY REPORT <br />CITY OF ST. ANTHONY VILLAGE <br />WSB PROJECT NO. 3183-00 PAGE 10