Operator was towing two passengers on a tube from behind the vessel.  Operators made a sharp port side turn at approximately 15 mph while towing the two passengers.  Operator observed the tube travel over the wake of the vessel and roll over.  Both passengers were thrown from the tube and landed head first into the water.  One passenger later identified as the victim began to yell for help.  Operator turned the vessel around and began toward the victim.  Operator and other passengers on board the vessel helped victim into the vessel and transported to Thunderbird Marina.  Victim was met by EMS at the thunderbird Marina and transported to Geary Co Hospital for possible head and neck injuries.  Victim was wearing a type 3 PFD and operator was not consuming.
Junction City                 