How the pool looked Sunday. (AP Photo/Wong Maye-E)
 
The water is blue again.
 
After what Rio Games officials said was an 11-hour process, the pool that once held green water used for diving at these Olympics was filled again Sunday with blue water, just in time for synchronized swimming to take place at the same venue.
 
The green, murky water would have made the synchronized competition seem farcical, given that competitors and judges need to be able to see what's going on beneath the surface. And the green water would have made that impossible.
 
"It's fine," Rio Games spokesman Mario Andrada said Sunday. "It's perfect for the competition. ... The water is much better than it was yesterday."
 
 
How the pool looked last week. (AP Photo/Matt Dunham)
 
After days of trying to revert the green water back to blue, officials decided to drain the pool on Saturday and start anew. About 1 million gallons of normal-looking water were transferred from a practice pool into the competition pool.
 
Officials have said the green water was the fault of a contractor who mistakenly dumped hydrogen peroxide into the pool, causing an adverse reaction when mixed with chlorine.
 
Some athletes said they felt their eyes were stinging after being in the water, though Andrada repeatedly said the green water was more of a cosmetic problem and not one that could jeopardize the health of competitors.
 
The pool in question is not the one used by Michael Phelps, Katie Ledecky, Simone Manuel and the rest of the Olympic swimmers at the Rio Games. That one is at a separate venue, one where water color was no issue.