Water treatment armature for the handling of water, comprising: a housing having an inlet for the fluid, an outlet for the fluid and a flow channel for the fluid extending between the inlet and the outlet, a water treatment element connected between the inlet and the outlet of the housing, a fluid flow measuring device configured to measure the fluid flow through the flow channel, the fluid flow measuring device having a rotatable, magnetic element, wherein the rotatable, magnetic element is positioned in the fluid flow, wherein the rotation of the rotatable, magnetic element depends from the fluid flow, and wherein the rotation of the rotatable, magnetic element generates a magnetic field, a fluid flow guiding insert configured to guide the fluid flow along the rotatable, magnetic element of the fluid flow measuring device, wherein the fluid flow guiding insert is positioned within a recess of the housing, wherein the rotatable, magnetic element of the fluid flow measuring device is positioned within a recess of the fluid flow guiding insert, characterized in that the outlet of the housing is coaxial with the inlet of the housing, the fluid flow measuring device has at least one sensing coil pair having a first sensing coil and a second sensing coil sensing the magnetic field that depends from the fluid flow, the fluid flow guiding insert is monobloc, the monobloc fluid flow guiding insert is configured to guide the fluid flow first from the inlet of the housing towards the water treatment element, namely by having a first flow channel section configured to guide the fluid flow from the inlet of the housing towards the water treatment element, to guide the fluid flow then from the water treatment element towards the rotatable, magnetic element of the fluid flow measuring device, namely by having a second flow channel section configured to guide the fluid flow from the water treatment element towards the rotatable, magnetic element of the fluid flow measuring device, and to guide the fluid flow then from the rotatable, magnetic element towards the outlet of the housing, namely by having a third flow channel section configured to guide the fluid flow from the rotatable, magnetic element of the fluid flow measuring device towards the outlet of the housing. a housing having an inlet for the fluid, an outlet for the fluid and a flow channel for the fluid extending between the inlet and the outlet, a water treatment element connected between the inlet and the outlet of the housing, a fluid flow measuring device configured to measure the fluid flow through the flow channel, the fluid flow measuring device having a rotatable, magnetic element, wherein the rotatable, magnetic element is positioned in the fluid flow, wherein the rotation of the rotatable, magnetic element depends from the fluid flow, and wherein the rotation of the rotatable, magnetic element generates a magnetic field, a fluid flow guiding insert configured to guide the fluid flow along the rotatable, magnetic element of the fluid flow measuring device, wherein the fluid flow guiding insert is positioned within a recess of the housing, wherein the rotatable, magnetic element of the fluid flow measuring device is positioned within a recess of the fluid flow guiding insert, wherein the fluid flow guiding insert is positioned within a recess of the housing, wherein the rotatable, magnetic element of the fluid flow measuring device is positioned within a recess of the fluid flow guiding insert, characterized in that the outlet of the housing is coaxial with the inlet of the housing, the fluid flow measuring device has at least one sensing coil pair having a first sensing coil and a second sensing coil sensing the magnetic field that depends from the fluid flow, the fluid flow guiding insert is monobloc, the monobloc fluid flow guiding insert is configured to guide the fluid flow first from the inlet of the housing towards the water treatment element, namely by having a first flow channel section configured to guide the fluid flow from the inlet of the housing towards the water treatment element, to guide the fluid flow then from the water treatment element towards the rotatable, magnetic element of the fluid flow measuring device, namely by having a second flow channel section configured to guide the fluid flow from the water treatment element towards the rotatable, magnetic element of the fluid flow measuring device, and to guide the fluid flow then from the rotatable, magnetic element towards the outlet of the housing, namely by having a third flow channel section configured to guide the fluid flow from the rotatable, magnetic element of the fluid flow measuring device towards the outlet of the housing.