Chad Pregracke, an Illinois man who has dedicated his life to cleaning the Mississippi River and other U.S. waterways, is the 2013 CNN Hero of the Year. Pregracke organizes community cleanups across the country through his nonprofit, Living Lands & Waters. About 70,000 volunteers have pitched in, helping Pregracke collect more than 7 million pounds of trash in the past 15 years. "The garbage got into the water one piece at a time," Pregracke said earlier this year. "And that's the only way it's going to come out." "I'll just keep on cleaning up America's rivers and loving every minute of it," said Pregracke when he accepted the award. During the show, Pregracke pledged to spread some of his Hero of the Year money to the rest of the top 10 Heroes: "I've met so many great people today, the other Heroes, and I'm really moved by all their stories and all the things they do around the world. ... I'm going to give 10 grand to each of them, because they're awesome." Pregracke, 38, grew up in East Moline, Illinois, where the Mississippi River was in his backyard. As a teenager, he worked as a commercial shell diver and began to notice the heaps of debris in the fabled waterway, which supplies drinking water to 18 million people in more than 50 U.S. cities. "I saw thousands of barrels, thousands of tires, cars, trucks and tops of school buses. ... I got sick of seeing it and just wanted to do something about it," said Pregracke. For nine months out of the year, Pregracke lives on a barge with members of his 12-person crew. They go around the country with a fleet of boats, and they try to make cleanup fun for the volunteers who show up in each city.