RedactedNarrative: Vessel 1 Operator was towing a water tube with 4 passengers on tube. The tube went over a rough wake, and ejected Passenger/Injured out of the tube and into the water. Passenger/Injured, injured her back upon landing in the water. The Operator stopped the Vessel and another passenger on the tube, exited the tube, and swam out to Passenger/Injured to make sure she was okay. Passenger/Injured was transported to Mercy Hospital in Walworth Co.