Water Distribution in the House

First, the cold water enters the main pipe of the house's water distribution from its source deep in the ground. Then it is distributed to the cold water tank and water taps of bath, wash basin, and toilet in the second floor and also into water tap of sink on the first floor. After it water enters the cold water tank, it goes straight into the hot water tank and changes into hot water. Finally it is distributed to water taps of bath and wash basin on the second floor and water tap of sink on the first floor.