How did the Romans use the Spring water?

Apulia: "There is a stone tank around the Spring. It’s sealed with lead to stop the water from leaking away.  It can only go two ways: to the baths or through a big drain out to the river."

"The roof over the Spring was added later.  Statues of gods and goddesses stand in the water.  Plants grow on the walls and sometimes birds fly through the windows. It seems more like a pool in a wood than a water tank in the centre of a town".

"The stone tank still surrounds the Spring, although the roof fell down sometime in the 6^th-9^th centuries.  The water still goes either to the Great Bath or through the Roman drain to the river Avon.  So the Roman plumbing is still working!"

The Roman spring