Automatic wireless water level controller is a simple controller unit contains the transmitter and the receiver unit. This provides low float and high float sensors fixed at the over head tank. When the water gets empty in the tank low level sensor detects by transmitter sending signal to receiver unit. Then sump motor is requested to turn on by the receiver. Now water is filled in the overhead tank. Finally water reaches the high float sensor. Transmitter ordered receiver to turn off the sump motor. No water spilling on the overhead tank, using this automated wireless technology.