A water reservoir for a refrigerator comprising a refrigerating compartment provided with a front door (10) having an internal panel (11) in which a water reservoir (R) is removably affixed and an external face carrying a dispensing valve (30) which comprises a recipient (20) superiorly opened and removably affixed to the internal panel (11) of the door (10) and incorporates a lower outlet nozzle (22) projecting through the door (10) so as to be maintained in fluid communication with the dispensing valve (30), said reservoir further comprising a lid (40) which is removably fitted onto the recipient (20) and provided with an opening (45); and an over-lid (50) which is provided with a window (55) and mounted to the lid (40), in order to be manually displaced between an open position, in which its window (55) is aligned with the opening (45) of the lid (40) and a closed position, in which the opening (45) of the lid (40) is blocked by the over-lid (50).
