International organizations, including the United Nations and global hydrological institutes, project that nearly half of the world's population could be living in areas of high water stress by the year 2050 if current consumption patterns, population growth trajectories, and climate change trends continue unchecked. Regions across the Middle East, South Asia, parts of Africa, and the American Southwest are especially vulnerable to severe depletion of surface reservoirs and underground aquifers. Avoiding widespread scarcity will require immediate, coordinated global investments in water efficiency, agricultural drip irrigation, wastewater recycling, and infrastructure protection.