Abstract: The present invention relates to a household water purification device (20) comprising, a housing (22) and water purification means comprising a filter unit (4) accommodated in the housing, which filter unit accommodates a filter element (26) and has a cap (28) for replacing the filter element, wherein the filter unit is moveably arranged with relation to the housing to move the filter unit between a normal position and a maintenance position wherein at least the cap is substantially situated outside the housing. This water purification device enables an easy and swift replacement of the filter element inside the filter unit. The invention also relates to a filter unit (4).