July 27 schedule for Paris Games

Swimming events are scheduled to begin Saturday at the 2024 Olympic Games in Paris, which for Team USA means stars like Katie Ledecky and Caeleb Dressel will hit the pool for the first time.

While the Seine River will host triathlon and marathon swimming races, most events will take place at La Défense Arena’s Olympic swimming pool.

Swimming in the Seine has been banned since 1923, and athletes have expressed frustration with the high amounts of fecal bacteria plaguing the river. Olympic organizers invested $1.5 billion to bring the water back to safer standards for the 2024 Paris Games, but it hasn’t come without backlash, as some Parisians in June threatened to defecate in the Seine to protest the large sums France committed to river clean-up instead of social causes.