Abstract: Disclosed is a universal adapter including a magnetic module that is coupled between a water pipe and a spray member for spraying tap water regardless of equipped sites of various spray members to produce ionized water. The universal adapter includes: a magnet module including a body having a passage pipe of a nonferrous metal material in an interior thereof and having a plurality of accommodating recesses disposed on opposite sides thereof with respect to the passage pipe, a plurality of permanent magnets accommodated within the accommodating recesses; and a housing including a mounting hole formed in an interior of the housing and through which the magnet module is mounted, a first coupling portion having a screw thread on an outer periphery, and a second coupling portion having a screw thread on an inner periphery.