Removal of excess chlorine is essential in the treatment of water to:

The removal of excess chlorine in water treatment is essential to make the water palatable. While chlorine is an effective disinfectant that helps to kill bacteria and other pathogens in water, if present in high concentrations, it can impart an unpleasant taste and odor. This can make the water less enjoyable to drink, leading people to avoid it even if it is safe. Ensuring that chlorine levels are reduced to acceptable limits not only enhances the overall taste of the water but also helps in providing a better drinking experience.

Other factors, such as shelf life and preventing algae growth, are important but they are not the primary reason for removing excess chlorine. Chlorine can affect the growth of algae, but the principal concern with excess chlorine really centers around consumer acceptability and taste, making it crucial for public health and satisfaction.