The use of every drop of water from the rain will be only solution to the water problem in the urban areas like metropolitan cities or cities with large population. Water from the rain can be very easily collected through apartments, housing societies and private homes in the cities. The Rivers in cities are already polluted and not useful for drinking. The author has studied the means of water harvesting in the developed nations and have developed the model to implement the same in our country. The need of the water harvesting and its implementation at large level from Government, local bodies and awareness from all the people will be only possible to preserve the water falling from the sky in the form of rain.