What is the main advantage of using chlorine over other water supply treatment methods?

The main advantage of using chlorine in water supply treatment is its ability to effectively kill bacteria. This property is crucial in ensuring safe drinking water, as chlorine serves as a powerful disinfectant, helping to eliminate pathogens that can cause waterborne diseases. By inactivating harmful microorganisms, chlorine plays a vital role in protecting public health and preventing outbreaks of illnesses associated with contaminated water.

Chlorine's effectiveness in disinfection is a significant reason why it is widely used in water treatment facilities, as it can quickly reduce microbial populations to safe levels. Additionally, chlorine remains active in the water for an extended period, providing a residual effect that continues to protect the water supply against potential recontamination.

While controlling algae growth, aiding in coagulation, and addressing taste and odor are important aspects of water treatment, they do not directly relate to the primary function of chlorine. Its role as a disinfectant that kills bacteria makes it the preferred choice in many water treatment processes.