Overview

• Three free, lifeguarded sites opened in early July near the Eiffel Tower, Notre-Dame and the National Library.
• The regional health authority reports no serious illnesses among swimmers to date.
• Water quality is tested continuously with a flag-alert system, and July saw 13 closure days after heavy rain.
• The city invested about €1.4 billion in sewer and wastewater upgrades to make the river swimmable.
• Ecological recovery is evident, with fish species rising from about 3 to over 30 and endangered mussels observed.