Chlorination is a water treatment process that involves adding chlorine or chlorine compounds to disinfect water. This method effectively kills harmful bacteria, viruses, and other pathogens, making the water safe for drinking and other uses. It is commonly used in municipal water systems and swimming pools to maintain water quality. In addition to disinfection, chlorination helps control algae growth and improves the overall taste and odor of water. The process can be adjusted based on the specific needs of the water supply, ensuring that it meets safety standards set by organizations like the Environmental Protection Agency (EPA).