Which best describes the role of sodium silicofluoride in water treatment?

Sodium silicofluoride is primarily used in water treatment as a source of fluoride. This compound is introduced into drinking water to help prevent dental cavities. Fluoride has been shown to be effective in reducing the occurrence of tooth decay by strengthening tooth enamel and inhibiting the growth of harmful bacteria in the mouth.

Using sodium silicofluoride in water treatment systems ensures that the appropriate levels of fluoride are maintained in the water supply, which is why it is commonly included in fluoridation programs. This practice plays a significant role in public health initiatives aimed at improving oral health in communities. Other options listed do not accurately describe the primary function of sodium silicofluoride; it does not serve as a disinfectant, a source of phosphorus, or as a coagulation agent.