Abstract: The present invention entails a chlorinator having a chlorine tank and a mixing tank and an inlet water line for receiving water from a source and dividing the water into two flows, one flow being directed into the chlorine tank while the other flow is directed into the mixing tank. Water directed into the chlorine tank is directed through chlorine so as to form a chlorine-water solution that is in turn directed to the mixing tank where this solution is mixed with water to form a final chlorine-water solution. This final chlorine-water solution can then be directed through a system of water lines to sterilize and disinfect the same. For convenience, the chlorinator is preferably built in an assembly form and is adapted to be interconnected within a water system such that the same can be interconnected between a source of water and the respective system of lines to be disinfected.