Abstract: A water purifier including a floating body having two parallel disk shaped electrodes extending into the water. The polarity between the disks is alternated at predetermined intervals to avoid plating. The disks are preferably made of a copper/silver alloy. Preferably the device is powered by a photovoltaic panel attached to a skimmer cover. Alternatively, the device can be powered by a photovoltaic panel laminated to the top or the device can be configured for insertion into a pipe plug unit that can be used in connection with a pipe T.