5,205,932 Trademark Reg.
Chlorination is used extensively by municipal water treatment plants to disinfect water.
However, the gaseous chlorine used by these plants is much too dangerous for home use. When chlorine is fed into water, it first reacts with any iron, manganese, or hydrogen sulfide that may be in the water. The rate of feed is normally adjusted to make sure that sufficient chlorine is available to fully react with the organics present. When both the mineral and organic reactions have been completed, any residual chlorine remains in the drinking water. Chlorine, as stated above, is a very effective disinfectant and has been used in drinking water supplies for nearly ninety years.