Some tower owners want antennas to be installed on the water tower's painter's ring. Since the rings are used to access portions of the tank and also used to support the articulated ladder while painting the ball, the upper ring cannot be obstructed. The lower ring is a walking surface for workers and for safety reasons cannot be obstructed just as ladders cannot be hindered with cables. If an injury or death occurs as a result of an obstruction, it can create a liability for the owner. More importantly, however, it could possibly have been prevented.