Olympics official on Rio's green diving pool: 'Chemistry is not an exact science'

The pools for the Summer Olympics mysteriously turned green this week in Rio de Janeiro. Why? ¯\_(ツ)_/¯
 By 
Sam Laird
 on 
Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable

The diving pool for the Summer Olympics mysteriously turned green this week in Rio de Janeiro, then the pool next to it turned from blue to a lighter shade of green.

It's all very weird -- but Friday's explanation from a Rio 2016 spokesman is even weirder.

The diving pool was closed for practice Friday morning as officials struggled to fix the off-color water. The governing body of international swimming blamed the problem on a shortage of water-treating chemicals.


You May Also Like

Swimmers have expressed frustration about conditions online and in the media, although Olympics officials insist the water is safe to swim in.

Now here's Rio 2016 spokesman Mario Andrada explaining the delay in fixing the water.

"Chemistry is not an exact science," he said. "Some things, as you can see, went longer than expected."

What? No. Wait. That's not ... chemistry ... is an ... exact ... ah, nevermind.

This could explain a lot, though.

Topics Olympics

Mashable Image
Sam Laird

Sam Laird is Mashable's Senior Sports Reporter. He covers the wide, weird world of sports from all angles -- as well as occasional other topics -- from Mashable's San Francisco bureau. Before joining Mashable in November 2011, his freelance work appeared in publications including the New York Times, New York Times Magazine, Slam, and East Bay Express. Sam is a graduate of UC Berkeley and UC Santa Cruz, and basketball and burritos take up most of his spare time. Follow him on Twitter @samcmlaird.

Mashable Potato

Recommended For You
This powerful robotic pool cleaner has hit its best-ever price in Amazon's Spring Sale — save over $300
iGarden robotic pool cleaner in the water

How to watch the 2026 Winter Olympics online for free
Luca Zingante of team Monte Lussari competes

Super Bowl 2026: When Green Day performs, how to watch live
Tré Cool, Billie Joe Armstrong and Mike Dirnt of Green Day perform onstage during The FanDuel Party Powered by Spotify 2026

Green Day's Super Bowl performance did the unexpected
Green day performing on stage

How to watch the 2026 Winter Olympics: streaming guide
scenic mountain view with NBC Milan Cortina 2026 Olympics logo overlayed

Trending on Mashable
NYT Connections hints today: Clues, answers for April 3, 2026
Connections game on a smartphone

Wordle today: Answer, hints for April 3, 2026
Wordle game on a smartphone


NYT Strands hints, answers for April 3, 2026
A game being played on a smartphone.

What's new to streaming this week? (April 3, 2026)
A composite of images from film and TV streaming this week.
The biggest stories of the day delivered to your inbox.
These newsletters may contain advertising, deals, or affiliate links. By clicking Subscribe, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up. See you at your inbox!