Organisers of the Paris 2024 Olympics remain optimistic that the triathlon events will proceed as scheduled despite concerns over water quality in the Seine River due to recent rainfall. They acknowledged that the rain may impact water quality for the next 24 to 36 hours, potentially leading to the cancellation of a training session planned for Sunday. A decision on the training session will be made early Sunday morning, while the triathlon competitions are set to take place starting July 30. Significant efforts have been made to improve the Seine's water quality, including investments of 1.4 billion euros, but fluctuations in bacteria levels remain a concern. Data indicates that water quality was suitable for swimming most days leading up to the rains, though recent tests showed elevated E. coli levels. Organisers are confident that conditions will improve in time for the events.