Updated: Apr 1, 2021
Disinfection is typically accomplished when the transmission of infections between persons or from the water is kept to a minimum and algae and other nuisance organisms are controlled. Disinfection is the process of destroying microorganisms that might cause human disease. Many factors affect the disinfection process in swimming pools and spas: the pH of the water temperature, environmental wastes, and user contamination. As the level of waste and contamination increases, the proper level of disinfection becomes harder to maintain. The most common disinfectant, chlorine and bromine, used in pools and spas are also oxidizers. The disinfectants react with and kill or inactivate microorganisms and oxidize contaminants. The most common process to prevent disease contraction are disinfection and filtration.