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which it came. That leaves public water systems (predominantly municipal), irrigation, special <br />categories and water level maintenance, and industrial processing as the four largest consumptive <br />water uses, and most of this water is not returned back to its original source (Table 1). <br />Category <br />2003-2012 Average <br />Future Demand <br />Power Generation <br />316,000 MGY <br />Non -consumptive use <br />expected to increase and <br />consumptive use to remain <br />constant <br />Public Water Systems: Municipal <br />and Non -municipal <br />133,000 MGY <br />Expected to increase <br />significantly <br />Irrigation: Major Crop & Non Crop <br />13,200 MGY <br />Relatively constant or <br />increase slightly <br />Special Categories & Water Level <br />Maintenance <br />13,000 MGY <br />Expected to remain <br />relatively constant <br />Industrial Processing <br />9,600 MGY <br />Expected to remain <br />relatively constant <br />Private Water Supply (Domestic) <br />5,800 MGY <br />Figure 5. Water consumed in the Twin Cities metropolitan area, 2003-2012 average. <br />Public w°WEater <br />S.vskems: Municipal <br />and Non -municipal <br />27 <br />Irrigation <br />3% <br />Expected to decrease <br />Special Categories & <br />k.Vate r Level <br />fblainte Hance: <br />3i% <br />Industrial Processing <br />Private domeski'= <br />demand <br />1% <br />2% <br />Power generation - self supplied <br />Power generation is the single largest water use in the metropolitan area, and production above what <br />is identified in contingency plans is the fourth water use priority in the state. <br />WATER SUPPLY MASTER <br />PLAN- Draft June 2015 <br />17 <br />