The present invention relates to a water extraction system comprising: a flow cell comprising a membrane; the membrane comprises an active layer comprising an immobilized aquaporin water channel, and a support layer, the membrane having a supply side and a non-feed side As well as a source aqueous solution in fluid communication with the supply side of the membrane. [Selection] Figure 1本発明は、下記のものを含む水抽出システムに関する:膜を含むフローセル;膜は、固定化されたアクアポリン水チャネルを含む有効層、および支持層を含み、膜は供給側および非供給側を有する;ならびに膜の供給側と流体連通した供給源水溶液。【選択図】図1