What is the purpose of adding chlorine to water before it enters public water pipelines?

The primary purpose of adding chlorine to water before it flows into public water pipelines is to kill bacteria and other microorganisms that can cause disease. Chlorine is a powerful disinfectant that effectively eliminates pathogens such as viruses, protozoa, and bacteria, ensuring that the water supply remains safe for consumption.

While there are various other aspects of water treatment, such as enhancing taste (which can involve different substances), improving clarity, or adding minerals, the foremost concern in public health is to ensure that drinking water is free from harmful organisms. The practice of chlorination has been a standard method for ensuring that public water systems maintain hygiene and meet safety standards. This is critical in preventing waterborne illnesses and protecting the community's health.