PARIS — Olympics organizers are banking on the sun and scorching temperatures to improve the water quality of the Seine River enough for triathletes to swim in it.
Otherwise, they could be feeling the heat.
Concerns about the Paris river's cleanliness postponed the men's triathlon on Tuesday, with officials hoping the swimming portion of the race will soon be able to go forward in the long-polluted waterway following an expensive cleanup effort.
Organizers said they will try to hold the men's triathlon Wednesday instead. The women's competition also is scheduled that day, but both will only happen if water tests show acceptable levels of E. coli and other bacteria. Friday is also planned as a backup date.
However, storms or rain are forecast Tuesday night through Thursday, which could complicate rescheduling because rain generally causes bacteria levels in the Seine to rise.
''It's disappointing that there's this negative aspect now with the delay," American triathlete Seth Rider said. "But I hope we can have a triathlon and I can accomplish this dream that I've had since I was a little kid.''
Aurélie Merle, the Paris 2024 director of sports, told reporters Tuesday that water samples are taken 21 and a half hours before decisions are made about the swim, leaving uncertainty about its accuracy the day of the race.
Paris spent 1.4 billion euros ($1.5 billion) to improve the water quality in the Seine so the swimming portion of the triathlon and the marathon swimming event next week could be held in the famed river that runs through the city center. But bacteria levels have remained in flux.