An atmospheric water generator (AWG), is a device that extracts water from humid ambient air, producing potable water. Water vapor in the air can be extracted either by condensation - cooling the air below its dew point, exposing the air to desiccants, using membranes that only pass water vapor, collecting fog,[1] or pressurizing the air. AWGs are useful where potable water is difficult to obtain, because water is always present in ambient air.
AWG may require significant energy inputs, or operate passively, relying on natural temperature differences. Biomimicry studies have shown the Onymacris unguicularis beetle has the natural ability to perform this task.[2]