Abstract: A cistern container assembly comprising a cistern, a frame having a number of semi-circular cradles on which the cistern rests, and a similar number of external reinforcing hoops on the cistern, each hoop corresponding to an associated one of said cradles, each reinforcing hoop being U-sectioned to provide an external groove which receives a U-sectioned ring of resilient material, and each cradle engaging in the external groove of the associated reinforcing hoop. Half collars extend partially around the hoops and are attached to the frame by adjustable links and tightening devices to secure the cistern in the semi-circular cradles.