A water producing apparatus for producing liquid water from a moisture in the ambient air by an adsorbent. Two columns holding the adsorbent are combined with a blower for feeding the air into the column and a condenser for condensing the desorbed steam obtained by heating the adsorbent adsorbing water. The blower and the condenser are commonly used for the two columns so as to minimize pipes and to save a consumption of energy caused by a pressure loss.
