Despite E. Coli Concerns, Women’s Triathlon Completed with Swim in the Seine River

2024 PARIS SUMMER OLYMPIC GAMES

Despite concerns about water quality in the Seine River leading to various practice cancellations and the postponement of the men’s race, the women’s triathlon went off without a hitch early Wednesday morning. 

Athletes started racing at 8 AM in Paris (2 AM EST), with the 1500m swim marking the first leg of the event. 

When all was said and done, Frenchwoman Cassandre Beaugrand crossed the finish line first in front of a home crowd in a time of 1:54:55, becoming the first French person to ever medal in the event. Switzerland’s Julie Derron and Great Britain’s Beth Potter rounded-out the podium. 

The swim in the Seine comes as a historic moment for the nation of France. Deemed “unswimmable” for years, the Seine has long been a topic of debate amongst the French public. When the government, in combination with Paris 2024 Organizers, announced a $1.5 billion clean-up effort, many were skeptical about the ability to make the Seine safe to swim in. Despite the clean-up, tests taken just a month from the Olympics showed E. coli levels at 10 times the acceptable limit for swimming. However, reduced rainfall levels throughout the month of July contributed to a sharp decline in bacteria levels, leading Paris Mayor Anne Hidalgo to take a plunge into the river before the start of the Games.

With conditions in the river improving, organizers were optimistic that the triathlon and open water events would be able to occur without issue, but recent downpours increased bacteria levels once-again. As a result, several triathlon training sessions were canceled early in the week, along with the men’s race being postponed.  Despite the hiccups, it appears as through bacteria levels have returned back under safe-swimming levels.

World Aquatics requirements for inland waterways:

  • Enterococci score: <200 is Excellent; <400 is Good; >400 is Unacceptable
  • E. Coli score: <500 is Excellent; <1,000 is Good; >1,000 is Unacceptable

World Triathlon requirements for inland waterways:

  • Enterococci score: <200 is Excellent; <400 is Good; <330 is Sufficient
  • E. Coli score: <500 is Excellent; <1,000 is Good; <900 is Sufficient

The men’s triathalon will also occur today, with athletes slated for a 10:45 AM start in Paris. Assuming conditions remain stable, open water swimming will take over the Seine on August 8 and 9.

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Boknows34
46 minutes ago

Great finish for Alex Yee. Timed it perfectly.

Aquatiger
1 hour ago

It looks like they took the level criteria as a suggestion rather than a rule. Another article said E. Coli levels were good in one spot yesterday but just over in 2 spots and 1500 in a 4th spot. And that was yesterday. I didn’t realize these weren’t hard and fast rules.

From the ESPN article “But experts stressed that these numbers are simply guidelines used to assess risk.”

Last edited 1 hour ago by Aquatiger
SwimKen
2 hours ago

I don’t believe for a moment that levels were normal.

PFA
Reply to  SwimKen
2 hours ago

Over under on swimmers getting E-coli?

The unoriginal Tim
Reply to  PFA
1 hour ago

They are in great health so unlikely.

Joel
Reply to  The unoriginal Tim
55 minutes ago

Sometimes athletes seem to catch bugs easier than the average relatively healthy person.

CasualSwimmer
Reply to  Joel
14 seconds ago

Good training means controlled fatigue, but this fatigue can also increases your odds of catching something

The Albatross
2 hours ago

Congratulations Cassandre ! It was a supreme effort !

About Nicole Miller

Nicole Miller

Nicole has been with SwimSwam since April 2020, as both a reporter and social media contributor. Prior to joining the SwimSwam platform, Nicole also managed a successful Instagram platform, amassing over 20,000 followers. Currently, Nicole is pursuing her B.S. in Biomedical Engineering at Worcester Polytechnic Institute. After competing for the swim …

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