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 theirs. This involves practices such as conserving water, protecting natural water sources, and using technology to improve water efficiency. Key strategies for achieving a sustainable water supply include rainwater harvesting, wastewater recycling, and the restoration of ecosystems like wetlands. By implementing these methods, communities can ensure a reliable and clean water supply while also preserving the environment and promoting biodiversity.