The aims of this project is to build a mini hardware of waste water treatment based on the real types. The microcontroller can receive and transmitted data from computer via Visual Basic or in other words it can be control through the Visual Basic and programming from microcontroller. This project is to develop the knowledge and experience to students on how to implement the technique of monitoring and assessment on the performanceof hardware system. We will be using a Computer, as data analyzer to monitoring and assess the performance of system. Currently, computer controlled system has been widely used in continuosly monitoring the conditions of water.    Using electrically operated sensors,computers receive vital information for various operating conditions, thus allowing minor adjustments to be made far more quikly and accurately than mechanical systems.