Following social media speculations over the colour chaange of the swimming pool at Rio Olympics, spokesman Mario Andrada has come out to say “a proliferation of algae,” caused the green water.

“This was because of heat and a lack of wind,” he said, per the Independent. “We did all the chemical tests. The pool will be blue tomorrow (Wednesday).

“If it were green and yellow, we would know it was a patriotic thing,” Andrada joked, referencing Brazil’s national colours.
Folk on social media have been speculating about the cause of the colour change of the swimming pool in Brazil, many hilariously wondering if it’s urine.

Other possibilities include an overabundance of algae, while some even joked that the water had been dyed green to represent the Brazilian flag..

There are different theories floating around, however. Some wonder if the pool’s filtration system failed, or struggled to handle the pool’s large capacity.

Other science nerds speculate that the presence of copper ions caused an unbalanced pH level.

http://globaltake.com/rio-spokesman-explains-olympic-pool-turned-green/