Once dubbed "the purest water in the world," the Big Eddy Spring runs right through our brewery in the heart of Chippewa Falls, Wisconsin, and is where our bolder Big Eddy series gets its name Once dubbed "the purest water in the world," the Big Eddy Spring runs right through our brewery in the heart of Chippewa Falls, Wisconsin Jacob Leinenkugel Brewing Co., Inc., Chippewa Falls, WI