Chlorination is the process of adding the element chlorine to water as a method of water treatment to make it safe from illness producing bacteria, viruses and parasites. Chlorine, in various forms, is the most widely used chemical for water treatment, being both economical and highly effective for bacteria and algae control. Water which has been treated with chlorine is effective in preventing the spread of waterborne disease. Chlorine disinfection technology has almost completely eliminated from our lives the risks of waterborne diseases such as typhoid fever, cholera, and dysentery.
