Saudi Arabia faces severe water scarcity due to limited surface water and irregular rainfall, but demand is growing rapidly due to population growth, industrialization, and tourism. To address this, Saudi Arabia has greatly expanded desalination capacity, led by reverse osmosis plants. However, rising costs and environmental impacts require a shift to more sustainable technologies like solar and nuclear powered desalination. If Saudi Arabia continues to invest in private sector partnerships and new technologies, the desalination industry has strong potential for high profits and meeting the country's critical water needs.