Abstract: An Automation is the utilization of different control techniques for operating equipment’s such as operations in factories, aircraft and other applications with reduced human power. The filling process is a mission performed by a machine that fills liquid products such as water or cold drinks. Traditional bottling method include placing bottles on a conveyor belt and filling only one bottle at a time. In this paper, it has been designed and implement water filling machine system for different types of bottles by using PLC. Where the water filling machine system includes design and implement prototype of a flat belt conveyor with dimensions (300*40) mm and automatic process for water filling machine using the water pump and sensors which gives the appropriate information to control unit then design the controller using PLC. The PLC plays important role to implement automatic filling process by using PLC programing software and ladder diagram language. It was found that the water filling machine using PLC is less operational cost and less power consumption than the traditional control systems, in addition more flexible and time saving Keyword: PLC, conveyor, DC motor, inductive sensor, water pump, Relay, etc,,