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Paris Olympics Swimming
Competitors dive into the Seine river at the start of the men's 10km, marathon swimming, at the 2024 Summer Olympics, Friday, Aug. 9, 2024, in Paris, France. (AP Photo/David Goldman, Pool)

Water quality was acceptable when Olympians swam in Seine River, data shows

Water quality data used by Paris Olympics organizers shows that bacteria levels in the Seine River were within acceptable levels on the days that athletes swam in the famed waterway

By KATE BRUMBACK
Published - Aug 09, 2024, 02:25 PM ET
Last Updated - Aug 09, 2024, 02:25 PM EDT

PARIS (AP) — Water quality data used by Paris Olympics organizers shows that bacteria levels in the Seine River were within acceptable levels on the days that athletes swam in the famed waterway, according to their tests and established thresholds.

The Associated Press obtained the results of daily tests for fecal bacteria on water samples taken at four points in the river two or three times daily. The data spans a period from July 19, a week before the opening ceremony, through Thursday, when the women's marathon swim was held and a day before the men's marathon swim.

Officials have been sharing some water quality data at briefings during the Games, but the new information is a more complete set of numbers, including the results from at least two tests each day for all four sampling sites.

The river that flows through the heart of France's capital has been so polluted that swimming has been banned for a century with a few exceptions. Paris launched massive infrastructure improvements costing 1.4 billion euros ($1.5 billion) to ensure the Olympic triathlon and marathon swimming events could be held in the Seine.

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