The water level Indicator employs a simple mechanism to detect and indicate the water level in an overhead tank. This is a five levels indicator. The sensing is done by transmitter and will start sending radio signal that will received by the receiver. The receiver updates different level LED depends upon the water level signal transmitted by transmitter. (Five level). A buzzer is also added which will automatically start as the water level becomes full. The user have to press the only button on receiver to stop the buzzer. The water level Indicator will be work efficiently up to 5 floor building. Installation of the receiver in open will increase its efficiency.