Why is chlorine added to the water in swimming pools? - Leaving Cert Chemistry - Question 1 - 2014

Chlorine is added to swimming pool water primarily to sterilize it. This chemical effectively kills bacteria and other microorganisms, including pathogens that can cause disease. By ensuring the water is free from harmful microbes, chlorine plays a crucial role in maintaining the health and safety of swimmers. Additionally, the use of chlorine helps to purify the water, keeping it clear and clean for recreational use.