The Seine is set to be a star feature of the Paris Olympics, but with just one month remaining until the opening of the games, heavy rains and pollution are keeping organisers in suspense on whether they will be able to host the open-water swimming events and a leg of the triathlon in the river.
French authorities have spent €1.4 billion ($1.5 billion) in the last decade trying to clean up the river by improving the Paris sewerage system, as well as building new water treatment and storage facilities.
