Dental unit having a water supply means for supplying water to a tapping point and/or a dental tool, wherein the water supply means comprises a water filtering unit (15) and a water disinfection unit (13), wherein the water filtering unit (15) can be arranged downstream with respect to the water disinfection unit (13). The invention also provides a method for cleaning a dental care system, which dental care system comprises at least one dental unit, the method including feeding water to the dental unit, filtering the water by a water filtering unit (15) and disinfecting the water by a water disinfection unit
