Overhead Water Storage Tank is a usual Water storage tank as its name stands for itself these tanks are placed over the head that is built on a certain height. The tank may be built of any material but the idea is to achieve maximum efficiency by placing a tank in some elevated distance.
How high your water tank is located affects the natural water pressure that it can produce. If your tank is positioned high enough, then you can “gravity feed” water to your taps without the use of a pump. Understand however, for decent water pressure your tank has to be about 10 metres higher