City of Paris Enables Seine Swimming Again for First Time Since 1923
In a significant step towards promoting a healthier and more sustainable city, Paris authorities have officially reopened the Seine River for public swimming, marking the first time since 1923 that the river is accessible for bathing. The decision comes after a comprehensive clean-up operation, which was spurred by the river being used as a venue in the Paris Olympics.
The reopening of the Seine River for public swimming was made possible through substantial investments totalling €1.4 billion ($1.6 billion). This funding was used to upgrade water infrastructure, including the construction of large rainwater storage reservoirs to prevent sewer overflow during heavy storms, and upgrades to wastewater treatment plants.
These measures ensured that the Seine River met safety standards for the triathlon swimming legs and open water swimming events during the 2024 Olympics. Despite some athletes falling ill after the events, officials continue to guarantee the river’s safety for swimmers.
Fourteen swimming areas will be set up on the Seine and the Marne rivers, in addition to the three sites within Paris. Swimming is now allowed at three free public sites along the Seine River, with supervision by 27 lifeguards. Swimmers must pass an aptitude test to ensure they can safely navigate the currents. Water quality is regularly tested, and swimming may be restricted based on pollution levels or current intensity, with clear indicators informing bathers.
Paris Mayor Anne Hidalgo framed the clean-up as part of a broader effort to adapt to climate change and improve quality of life in the city. French President Emmanuel Macron praised the project as a national point of pride.
The reopening of the Seine River for public swimming follows efforts to improve its water quality for Olympic events last summer. Two swimming areas on the Marne River have already opened in June, and the Seine River's first public swimming area opened on July 5, 2025. Three sites along the banks of the Seine will be able to accommodate over 1,000 swimmers daily until 31 August.
Pierre Rabadan, Paris deputy mayor for the Seine river, expressed his happiness about the reopening and fulfilling initial commitments. He stated that the water in the open swimming areas on the Seine River complies with regulations and poses no danger to swimmers. Daily water quality tests will be conducted during the swimming season on the Seine River to ensure continued safety.
This development is a testament to Paris' commitment to promoting a cleaner and healthier environment while providing opportunities for its citizens to enjoy the city's iconic waterways. The successful reopening of the Seine River for public swimming is a significant milestone in Paris' ongoing efforts to improve water quality and promote a greener and more sustainable city.
Embracing the spirit of outdoor-living and sustainable city development, Paris authorities have expanded their home-and-garden project by establishing Swimming areas along the Seine and Marne rivers. Starting from July 5, 2025, Parisian citizens can now enjoy basking in the rivers' rejuvenated waters, compliant with safety standards for triathlon swimming and open water events during the 2024 Olympics.
