Rooftop Rainwater Harvesting System for Green Building (Water Harvesting for Agricultural Purpose and Drinking Purpose)

The rainwater harvesting locally collects and stores rainfall through different technologies, for future use to meet the demands of human consumption or human activities. However, rainwater harvesting has much wider perspectives, in particular, if it is considered in relation to its role in supporting ecosystem goods and services. Rainwater harvesting (RH) is a new technique to conserve water and later use them in irrigation and other purposes due to growing urbanization and increasing population. Popularizing this technique in Gujarat, the credit goes to the Saurashtra Lok Manch Trust (an NGO) which works, studied the system and prepared the literature to educate farmers and other people that how to conserve water. The discharge of water from Sardar Sarovar reservoir through canals in recent years has boosted the agricultural production in a few districts of south (Bharuch, Baroda and Narmada) and north Gujarat (Ahmadabad and Gandhinagar). Now-a-days water harvesting system has been installed in most states of India because there are many benefits of adopting it such as increase in water availability, checks the declining water table, avoids flooding, improves the quality of groundwater through the dilution of fluoride and prevents soil erosion etc. Therefore, this study is focused on the contribution and role of RH in Gujarat Agricultural (by showing improvement in land productivity and increase in crop production). The data for the study is collected by conducting the primary survey through using the schedule technique and focused group discussions. On the other hand, the data is also collected from the secondary sources like official website, books, research papers, journals etc. A sufficient, safe drinking water supply is essential to life. However, millions of people throughout the world still do not have access to this basic necessity. After decades of work by governments and organisations to bring potable water to the poorer people of the world, the situation is still dire. The reasons are many and varied, but generally speaking, the poor of the world cannot afford the capital intensive and technically complex traditional water supply systems. Unfortunately these technologies are widely promoted by governments and agencies throughout the world. Rainwater harvesting (RWH) is an alternative to these unaffordable options. It has been adopted in many areas of the world where conventional water supply systems have not been provided, too expensive or failed to meet people’s needs. RWH is a proven technology that has been in use since ancient times.