According to American and Russian scientists the most efficient methods of water decontamination today is oxidant gas (OXI) , which has more durable decontaminating effect and smaller contact time of oxidant with water, so that essentially reduce formation of carcinogenic trihalomethanes. This method provides possibility of decontamination process monitoring, high efficiency in various physical and chemical water states and reduction of water mains biofouling. Oxidant gas (OXI) also can be used for deironing, manganese and hydrogen sulphide. In addition, purification systems require less sulfur dioxide for reduction of residual chlorine, than at traditional chlorination.

Thus, the method of water decontamination by OXI-gas is completely deprived many lacks of traditional disinfection methods, in particular chlorination, at the same time it has all positive qualities that makes it worthy alternative in practice of the centralized, noncentralized drinking, service water supply and drainage system.