Abstract: An apparatus for extracting potable water from the environment air comprises a moisture collecting system having dew-forming surfaces and disposed so that the air drawn into the apparatus passes therethrough and moisture from the air condenses in the dew-forming surfaces. The apparatus also comprises a water reservoir capable of receiving water collected as moisture in the moisture collecting system. The water reservoir has a bottom and a side surface constituting a surface of revolution around a longitudinal axis of the reservoir, the reservoir having an outlet port formed at the bottom thereof along the longitudinal axis, for the withdrawal of water from the reservoir, and a circulation inlet port formed in the side surface. The circulation inlet port is designed so as to enable the introduction of water into the reservoir tangentially to the surface.