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3.0 Surface-Water Supplies <br />3.1 Regional Surface Water Supplies <br />Approximately 880,000 people in the metropolitan region rely, at least in part, on surface wafer as <br />their drinking water source. The Mississippi River serves as the primary water source for the <br />Minneapolis Water Works and the St. Paul Regional Water Services, which together serve 16 <br />additional communities with wholesale or retail water delivery. All of the water appropriated by <br />Minneapolis is drawn from the Mississippi River. For St. Paul, the river represents about 70% of its <br />appropriated water supply with the remainder pumped from high-capacity wells, the Rice Creek <br />Chain of Lakes (Centerville Lake) and tributaries to Vadnais Lake (Metropolitan Council, 2007a). <br />Between 2004 and 2030, the Metropolitan Council expects that the largest increases in water use in <br />the Twin Cities area will occur in areas served by the Minneapolis Water Works and the St. Paul <br />Regional Water Services. St. Cloud also <br />uses treated Mississippi River water. <br />Several communities purchase some or <br />all of their water from Minneapolis or <br />St. Paul. Examples include the Joint <br />Water Commission (Crystal, New Hope, <br />and Golden Valley), Bloomington <br />(partial supply), Edina (partial supply), <br />and Roseville. The surface-water service <br />areas are shown on Figure 19, <br />All other communities rely on <br />groundwater, which does not require the <br />extensive treatment necessary fol~ any <br />surface water. <br />Metropolitan Council, 2007a) <br />The Minnesota River is used, in part by the City of Mankato, which collects surface water though <br />collector wells (also known as "Ranney Wells) advanced underneath the river bed. <br />3.2 Regional Surface-Water Reliability <br />'The water intakes for the Minneapolis Water Works are in Fridley and the intake from the <br />Mississippi River for the St. Paul Regional Water Services is in Columbia Heights (the water is <br />P:\Mpls\23 MN\71\2371105 Water Supply Alternative Study\FinalBeliverables\Alternatives_Report_final.doc 25 <br />Figure 19 Areas Served by Surface Water Supplies (from <br />