Sustainable water supply refers to the management and use of water resources in a way that meets current needs without compromising the ability of future generations to meet their own needs. This involves practices that ensure a reliable and clean water source, such as rainwater harvesting, groundwater recharge, and efficient irrigation techniques. To achieve a sustainable water supply, communities often implement conservation strategies and invest in infrastructure that minimizes waste. Technologies like desalination and water recycling can also play a crucial role in providing additional sources of water while protecting ecosystems and maintaining water quality.