The toilet has a toilet bowl (1) with storage space (2) under it for the mobile toilet waste tank (3). In the use position, the tank is sealed to the toilet bowl. The tank is fitted positively into the storage space. It is locked positively in its use position by a lifting device (5) and a locking device (4), holding it with its connection aperture (7) sealed to the toilet bowl. The use position of the tank may be between the lifting device and the locking device. The position in which it is held connected to the toilet bowl may be horizontal.
