What is a significant advantage of using UV disinfection over chlorination?

A significant advantage of using UV disinfection over chlorination is that it does not leave residual chemicals in the treated water. This is important because residual chemicals, such as chlorine, can react with organic materials in the water, creating harmful by-products that may pose health risks. In contrast, UV disinfection employs ultraviolet light to kill pathogens without adding any chemicals to the water, ensuring that the treated effluent is free from chemical residues.

This characteristic of UV disinfection leads to better water quality and safety for both human health and the environment, making it a preferred option in many wastewater treatment scenarios. Additionally, since there are no chemicals left in the water, the potential for recontamination from residuals in the distribution system is reduced, contributing to overall water quality and safety.