This May 23, 2013, photo shows a view of downtown Milwaukee with Lake Michigan and its shoreline to the right. Milwaukee and other once powerful industrial cities in the Great Lakes reg

 

              This May 23, 2013, photo shows a view of downtown Milwaukee with Lake Michigan and its shoreline to the right. Milwaukee and other once powerful industrial cities in the Great Lakes reg
This May 23, 2013, photo shows a view of downtown Milwaukee with Lake Michigan and its shoreline to the right. Milwaukee and other once powerful industrial cities in the Great Lakes region are pinning hopes for a return to prosperity on a precious resource: fresh water. (AP Photo/Roger Schneider)