
Paris Mayor Anne Hidalgo expressed confidence in the water quality of the River Seine for the upcoming Olympics, stating that she plans to swim in the river to demonstrate its safety, potentially alongside President Emmanuel Macron. The Seine is set to host marathon swimming events and the swimming leg of the Olympic and Paralympic triathlons.
Historically, the Seine has been heavily polluted, rendering it unsuitable for swimming and aquatic life. However, recent efforts have been made to improve its water quality, including the inauguration of a water treatment plant in Champigny-sur-Marne and the construction of a large storage basin to prevent untreated wastewater from entering the river during rainy periods.