Conveyor ware washer

A conveyor ware washer, comprising:

• at least one wash zone having wash nozzles for spraying wash liquid and a wash liquid re-circulation path that includes a wash tank for collecting at least a part of sprayed wash liquid and a wash liquid supply pipe with a pump for feeding wash liquid from the wash tank to the wash nozzles;
• a final rinse zone with final rinse nozzles for spraying final rinse liquid fed from a final rinse liquid supply device;
• a transportation device for carrying wares through the wash zone and final rinse zone in a transport direction from the wash zone to the final rinse zone;
• wherein the wash zone and final rinse zone are interconnected with each other to form a liquid cascading system, in which sprayed liquid flows from the final rinse zone to the wash zone;
• characterized by a water treatment device for receiving and treating sprayed wash liquid from the wash zone in such manner that the treated liquid is of potable quality of water from the microbiological point of view, and for releasing the treated liquid to the final rinse liquid supply device, where the final rinse liquid supply device feeds final rinse liquid, which is formed at least partly by the treated liquid, to the final rinse nozzles of the final rinse zone.