The pre-Olympics swimming test competition due to take place Sunday in the Seine in Paris has been canceled due to pollution of the river, the international swimming federation said after analysis of the latest water samples.

Following recent heavy rainfall, "water quality in the Seine has remained below acceptable standards for safeguarding swimmers' health," World Aquatics said in a statement on Sunday.

"Based on this weekend, it is clear that further work is needed with Paris 2024 and local authorities to ensure robust contingency plans are in place for next year."