What is Rainwater Harvesting Pit? A Rainwater Harvesting Pit is a specially designed structure built to collect, filter, and store rainwater. Typically constructed underground, it allows rainwater runoff from rooftops, paved surfaces, and open areas to be directed into the pit, where it percolates into the soil, replenishing groundwater reserves. https://www.inrainconstruction.com/rainwater-harvesting-pit