Overview

• Authorities have invested $1.5 billion in cleanup efforts over the past decade.
• Recent data shows E. coli levels within acceptable limits for most days between June 24 and July 2.
• Backup plans include postponements or relocation to Vaires-sur-Marne if water quality deteriorates.
• Heavy rainfall and climate change pose ongoing challenges to maintaining water quality.
• The Seine will host the triathlon and marathon swimming events, with the opening ceremony also on the river.