Rio 2016 bosses explain why the Olympic pool turned green

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Football News

One of the strangest moments from this summer’s Olympic Games in Rio de Janeiro has been the diving pool turning from a healthy clear blue to a murky green overnight.

When Team GB’s Tom Daley and Dan Goodfellow won bronze in the Maria Lenk Aquatics Centre pool on Monday night, everything seemed normal and as it should be.

But by the following day, the water was more emerald than blue - something unusual had happened and even the athletes were left scratching their heads. They hadn’t been told what had happened, either.


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Mario Andrada, a Rio spokesman, put it down to a “proliferation of algae”.

Meanwhile, British diving gold medalists Jack Laugher and Chris Mears - who competed in the green pool - suggested it may have been ink from the plastic boards positioned around the side of the pool.

We still didn’t have a proper explanation - until now, that is.

Games bosses explain what happened

According to the Mirror, games bosses have confirmed an unauthorised dump of 80 litres of hydrogen peroxide caused the problem.

This, in turn, caused algae to grow quickly, hence the reason for the water becoming discoloured.

Hydrogen peroxide mixed with chlorine

Gustavo Nascimento, director of venue management, is understood to have told the Lad Bible that the hydrogen peroxide - used to clean pools - shouldn’t have been mixed with the chlorine.

"We were not consulted; our contractor's failure is our failure," he added.

So there you have it: hydrogen peroxide mixed with chlorine was to blame.

Nothing sinister and certainly not urine.

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