One of the main advantages of a free chlorine disinfection system is:

The primary advantage of free chlorine disinfection systems is their effectiveness at various temperatures. Free chlorine remains a reliable disinfectant within a broad range of water temperatures, making it a versatile choice for water treatment processes. This ability to function effectively in varying thermal conditions allows water treatment facilities to maintain disinfection efficacy even as environmental conditions fluctuate, ensuring that health and safety standards are consistently met.

While other options might highlight certain benefits of chlorine disinfection, such as cost-effectiveness or ease of regulation, none match the significance of temperature adaptability, which is crucial for maintaining public health and compliance across diverse operational scenarios.