The swimming competitions at the 2007 Pan American Games consisted of 34 events, held on and at: pool: July 16–22, Maria Lenk Aquatic Park open water : July 14, Copacabana BeachThiago Pereira won eight medals and became the winner of the most medals in a single edition of the Games, equaling the Costa Rican swimmer Silvia Poll—who won eight medals at 1987 in Indianapolis. Wikipedia