How is drainwater harvesting done?

Drainwater harvesting involves collecting and storing runoff water from surfaces like rooftops, pavements, or agricultural fields for later use. This process typically includes the installation of drainage systems, such as gutters and conduits, to channel the water into storage tanks or reservoirs. The collected water can then be treated and used for irrigation, landscaping, or even potable purposes, depending on the quality and treatment methods employed. Effective drainwater harvesting helps mitigate flooding, conserve water resources, and reduce soil erosion.