The triathlon events at the Paris 2024 Olympics took place in the Seine River, despite earlier concerns about water quality due to high levels of E. coli from recent rainstorms. After significant cleanup efforts and last-minute water quality tests, both the men's and women's events proceeded, with the women's race seeing French athlete Cassandre Beaugrand win gold. American triathlete Seth Rider clarified that his viral comments about intentionally exposing himself to E. coli were a joke. Despite the successful events, athletes expressed ongoing concerns about the river's currents and potential health impacts from the water. Paris officials celebrated the events as a historic moment for the city's ecological efforts to clean the Seine.