Swimming pool chlorine generator instead of direct addition of chlorine. Salt water chlorination is a process that uses dissolved salt as a store for the chlorination system. The chlorination uses electrolysis to break down the salt. The resulting chemical reaction eventually produces hypochlorous acid, and sodium hypochlorite, which are the sanitizing agents already commonly used in swimming pools. As such, a saltwater pool is not actually chlorine-free; it simply utilizes a chlorine generator instead of direct addition of chlorine.