
Organizers of the Paris Olympics faced a significant challenge due to climate change as they planned for athletes to swim in the Seine River. The decision to allow swimming was initially in doubt due to concerns about water quality and extreme weather conditions.
Paris, a city with a combined sewer system, has been working to improve water quality in the Seine River. Despite investing 1.4 billion euros in infrastructure upgrades, heavy rains have posed challenges to the city's drainage system.