Fountain

A fountain is an arrangement where water if forced into the air under pressure, creating a jet. The pressure may be gravitational, or may be produced by a motor driven pump. 

A famous fountain rises from the surface of Lake Geneva. However, many fountains are located in small, artificial ornamental ponds, and often they are surrounded by statuary. 

Some more specific meanings: 

In Islam a fountain is the name of the place in the Mosque where worshippers can wash before Prayer. 
A water fountain is a tap and basin arrangement designed to provide drinking water.