Which floor does the secondary water supply of Liuyang Lily Garden start from?

Due to the insufficient water supply pressure of municipal pipe network, it can not meet the water demand of high-rise buildings. Therefore, secondary water supply is widely used in high-rise buildings at present. Generally, pressurized water supply starts from the sixth floor or so. Of course, depending on the regional environment and geographical location, there may be special cases of secondary pressurized water supply from the first floor.