A water table is a masonry architectural feature that consists of a projecting course that deflects water running down the face of a building away from lower courses or the foundation, though they are often primarily decorative. A water table may be found near the base of a wall or at a transition between materials, such as from stone to brick.

A water table is a projection of lower masonry on the outside of the wall slightly above the ground. Often a damp course is placed at the level of the water table to prevent upward penetration of ground water.

A water list is a projecting edge with an inclined top surface (exit), through which the rainwater flows. The bottom is provided with a water hole at the bottom to prevent the running water from ending up on the façade.

A water list usually consists of horizontal bricks or natural stone blocks that have been placed on or in a wall of a building or structure with an overhang.
A water list can also be made of metal such as aluminum or enamelled steel. Especially when the wall of the building jumps in at a certain height, it is important to install a water list.

Related elements are: water layers and window slabs that serve as a water list or water hammer.

Source From Wikipedia