Question

why is chlorine added to the filtered water before supplying it to the city​

Answer 1

To make the water more pure because chlorine kills all the germs and microorganisms present in water

Answer 2

Answer:

As a halogen, chlorine is a highly efficient disinfectant, and is added to public water supplies to kill disease-causing pathogens, such as bacteria, viruses, and protozoans, that commonly grow in water supply reservoirs, on the walls of water mains and in storage tanks.