On Fri, 24 May 2013 14:13:20 -0700, Oren wrote:
I'd go so far as to say the water table is warm. (seasonable)

More than a foot or two down, the ground water temperature in Florida
is pretty stable. Yes, the ground gets a lot more sun in summer, but
the water moves easily through the abundant sand and (farther down)
limestone. As a result, at the bottom of a swimming pool, it's going
to be close to 68F to 72F year round -- the same temperature as
Florida's many high-volume springs.

Edward