An apparatus (1) for treating a liquid, such as water or a beverage, in order to improve the quality of the liquid, and in order to ensure that the minerals and nutrients which are naturally present in the liquid are assimilated in a living organism consuming the liquid to the maximum extent. The apparatus (1) comprises at least two pipe segments (2) being twisted about a common axis in such a manner that each of the pipe segments (2) at least substantially abuts said common axis, each pipe segment (2) having an inlet opening and an outlet opening (3) , the pipe segments forming parallel flow paths between a common inlet and a common outlet. The liquid performs spiralling movements when flowing through the pipe segments, and thereby the minerals in the liquid are forced to be in a more absorbable form.