Water disinfection is one of the key treatment steps for all types of swimming pools, whether public or private. Efficient water disinfection is essential for pools. In order to ensure safe bathing water, most public facilities must follow strict water disinfection standards and practices. A proper balance of the water chemistry factors will provide water that will not damage pool components and is non-irritating to swimmers. It is then necessary to provide for disinfection of the water to prevent the spread of disease organisms from person to person and prevent unwanted growth of bacteria and algae in the pool.

The swimming pool water is required regular treatment because the water must be free from harmful bacteria. The water must be free from growth of algae. Ensuring the water is neither toxic nor irritating to swimmers. To prevent the formation of undesirable smells or taste in the water. To prevent corrosion of the pool surround and to prevent scale formation in the pool.