Abstract: Tank for storing pressurized water, including a plurality of hollow and tubular segments which are disposed adjacent and joined to each other and which are open on both sides, said tubular segments forming a tank body in which the pressure water is stored, the tank including a rectangular shape, an intake through which water enters the tank, and an outlet through which the water is evacuated from said tank. Two adjacent tubular segments are joined to each other by means of a connecting wall and the tank includes at least one cover on each side of the tank body in order to close said tank body. The connecting walls prevent a direct connection between the inside of two adjacent tubular segments, said tubular segments being communicated to each other through the covers.