Rainwater harvesting is a sustainable water management practice that involves the collection, storage, and utilization of rainwater runoff, typically from rooftops or other surfaces, for various purposes such as irrigation, household use, and groundwater recharge. This eco-friendly technique helps conserve precious freshwater resources, reduce stormwater runoff, and mitigate flooding in urban areas. Rainwater is collected in tanks or cisterns, and after filtration and treatment if necessary, it can be used for non-potable purposes like gardening, flushing toilets, or even as a source of drinking water in some regions. Rainwater harvesting contributes to water sustainability, especially in regions facing water scarcity or where traditional water sources are depleting, making it a valuable strategy for both environmental conservation and efficient water resource management.