An assembly comprising a filter device for use in a water outlet and an aeration device having a central water stream restricting body creating the aeration of the water, said filter device comprising: a cylindrical housing (12, 14, 16) defining an inlet and an outlet, said inlet having a seat for receiving and maintaining said aeration device relative to said cylindrical housing, a filter element comprising at least two concentric ring elements (20,22) and a plurality of radial elements (26,28) for interconnecting said at least two concentric ring elements (20,22), being positioned at said outlet of said cylindrical housing at a specific distance from said water stream restricting body of said aeration device, wherein said concentric ring elements (20,22) and said radial elements (26,28) of said filter element being integrally moulded with said cylindrical housing from a plastic material, a major ring element of said at least two concentric ring elements (20, 22) defining an aperture of a diameter somewhat smaller than the inner diameter of said cylindrical housing for the creation of a recess at the inner cylindrical housing wall of said cylindrical housing at said outlet for preventing droplets from being expelled from said outlet along said inner cylindrical wall of said cylindrical housing, and a minor ring element of said at least two concentric ring elements (20, 22) being positioned below said water stream restricting body of said aeration device characterized in that the minor ring element constitutes a water stream breaker for preventing the water stream supplied from said water stream restricting body from accumulating into a non-aerated water stream, and the radial elements (26, 28) being pins, and the plastic material of said integrally moulded cylindrical housing, concentric ring elements (20, 22) and said radial pin elements (26, 28) being a water and lime repellent plastic material. a cylindrical housing (12, 14, 16) defining an inlet and an outlet, said inlet having a seat for receiving and maintaining said aeration device relative to said cylindrical housing, a filter element comprising at least two concentric ring elements (20,22) and a plurality of radial elements (26,28) for interconnecting said at least two concentric ring elements (20,22), being positioned at said outlet of said cylindrical housing at a specific distance from said water stream restricting body of said aeration device, said concentric ring elements (20,22) and said radial elements (26,28) of said filter element being integrally moulded with said cylindrical housing from a plastic material, a major ring element of said at least two concentric ring elements (20, 22) defining an aperture of a diameter somewhat smaller than the inner diameter of said cylindrical housing for the creation of a recess at the inner cylindrical housing wall of said cylindrical housing at said outlet for preventing droplets from being expelled from said outlet along said inner cylindrical wall of said cylindrical housing, and a minor ring element of said at least two concentric ring elements (20, 22) being positioned below said water stream restricting body of said aeration device characterized in that the minor ring element constitutes a water stream breaker for preventing the water stream supplied from said water stream restricting body from accumulating into a non-aerated water stream, and the radial elements (26, 28) being pins, and the plastic material of said integrally moulded cylindrical housing, concentric ring elements (20, 22) and said radial pin elements (26, 28) being a water and lime repellent plastic material.