View source for Production of Water from the Air: The Environmental Sustainability of Air-conditioning Systems through a More Intelligent Use of Resources. The Advantages of an Integrated System

This article discusses a possible method of gathering water from the atmosphere when not enough water source is discovered from the oasis. While this method is near impossible to implement in the robot, it is still possible to create a water purification/extraction station for the robot to deliver water to rural areas. 

The article introduces traditional water processing methods, such as desalination from seawater and condensation. The author of the article conducts an experiment comparing the traditional HVAC system to an integrated system with main aim of water production and  additionally cooling at the same time. The experiment concluded that the integrated system with water production and cooling can reduce the HVAC installation cost and water supply cost.