Abstract: A tank is disclosed for installation on dump trucks. The tank is supported on two pairs of legs which are hinged to the bottom of the tank and pivotally movable between a lowered and locked position for supporting the tank on the ground and a raised position when the tank is installed on a dump truck. The tank has rollers on the bottom and sides to guide the movement of the tank into the truck bed during installation. A distribution manifold for liquid in the tank is secured on the back end of the tank at a level for draining and sprinkling the contents of the tank along with an optional pumping device liquid while standing on the ground on the supporting legs or while on the truck. It is loaded on the truck by tilting the truck bed to the rear and backing the truck to engage the rollers mounted on the front end of the tank. On engagement with the truck bed, the rollers guide the movement of the tank into the bed and the front pair of legs are collapsed and folded under the tank while backing the truck up.