Paris Olympics organisers cancelled the triathlon swimming training session for the second day in a row on Monday after recent heavy rain affected water quality levels in the Seine.

Sunday’s training session was also cancelled after tests carried out in the Seine on Saturday showed water quality did not meet the required threshold. The running and bike training sessions remain unaffected.

After tests in July, the River Seine was deemed to be clean enough for swimming but heavy rain in the French capital over the past 48 hours has seen the quality diminish.

“Given the weather forecast for the next 36 hours, Paris 2024 and World Triathlon are confident that water quality will return to below limits before the start of the triathlon competitions on July 30,” the organisers said in a statement on Monday.

“The priority is the health of the athletes,” the statement added.