Fresh water is an essential natural resource for which there is no substitute. Water is one of the simplest chemicals (H2O) known and yet is the foundation of life on Earth. All living forms on our planet depend on water. Rainwater harvesting is the collection and storage of rainwater for reuse on-site, rather than allowing it to run off. These stored waters are used for various purposes such as gardening, irrigation etc.
Rooftop rainwater harvesting is a system of catching rainwater where it falls. In rooftop harvesting, the roof becomes the catchments, and the rainwater is collected from the roof of the building and stored in tanks for further use. This method is very effective and if implemented properly for Building E helps in reducing the dependence on groundwater wells in RHU.