What is the most important use of chlorine in water treatment?

Chlorine is primarily used in water treatment for disinfection. This process involves the application of chlorine to kill or inactivate harmful microorganisms, such as bacteria, viruses, and protozoa, that can cause waterborne diseases. Disinfection is crucial for ensuring that drinking water is safe for human consumption and helps protect public health.

While chlorination can also contribute to oxidation and assist in flocculation and coagulation processes, its primary and most significant role is in disinfection. The effectiveness of chlorine in eliminating pathogens makes it an essential component of water treatment protocols. Understanding the importance of disinfection through chlorination is vital for those responsible for managing and treating water supplies.