Desalination: The process of removing salt from seawater or brackish groundwater, providing an alternative freshwater source for arid regions.
Xeriscaping: Landscaping techniques that aim at conserving water by using drought-resistant plants and minimizing the need for irrigation in arid regions.
Rainwater Harvesting: Collecting rainwater runoff from rooftops, storing it, and using it for various purposes such as irrigation in arid agricultural regions.