Abstract: A water purification apparatus for purifying water from a municipal water supply prior to a point of use has multiple water purification units including a carbon filter, a particle filter and an ultraviolet light source connected in series. The carbon filter removes free residual chlorine, the particle filter removes particles including carbon particles from the carbon filter, and the ultraviolet filter kills bacteria. A bypass conduit connected in parallel with the water purification units and valves permit system maintenance during which the water from the supply can flow directly to the point of use.