Which process best describes how pathogens are dealt with in potable water treatment?

Chlorination followed by filtration effectively addresses pathogens in potable water treatment by utilizing a two-step approach. Chlorination is a widely accepted method for disinfecting water, as chlorine is a strong oxidizing agent that effectively kills most bacteria, viruses, and other microorganisms present in water. This provides a primary layer of protection against pathogens before the water is stored or distributed.

After chlorination, filtration is used to remove any remaining particles and organisms that may not have been eliminated in the initial disinfection process. Filtration can also serve to remove particulates and turbidity, which enhances the overall quality and safety of the drinking water. This combination of chlorination and filtration ensures that the water is not only treated for pathogens but also remains clear and aesthetically pleasing.

While other options may involve techniques like ozone disinfection, ultraviolet treatment, or filtration alone, these methods may not provide the same comprehensive protection against a broad spectrum of pathogens as the combination of chlorination followed by filtration. Thus, this approach is generally more reliable for ensuring the safety of potable water.