If by swimmers you mean who has the most registered master swimmers, than its California.
Arizona
Yes most Amish are allowed to have swiming pools.
Well the average depth of a home installed swimming pool is about 6 ft
Fjorolorn, Iceland
Most swimming pools are between 4 and 10 feet deep. The World's Deepest Pool, though is 108 feet deep.
Hey, In most pools it is chlorine, but newer pools have been known to be use different chemicals.
no they most certainly do not .
Most of their parks do
It is the most popular method by far of sanitising pool water. I woulld say that every country does.
Chlorine is the most popular method.
most likely.
Most pools are a rectangular prism
Sports shops, some supermarkets sell them-also most swimming pools sell them