Treatment+of+Drinking+Water

= Treatment of Drinking Water =


 * Fresh water must be treated so that it is safe to drink and all potentially harmful disease causing substances are removed.
 * There are 2 ways to do this. Either using **chlorine** or **ozone**.
 * Chlorine dissolves in water to produce hypochlorous acid (HClO) that is able to oxidize and kill bacteria in the water. It is cheap and lasts a long time in the water
 * However it doesn’t have a nice taste and can under certain conditions react with organic species to form cancer causing substances.
 * If ozone is dissolved in water it is able to oxidize and kill bacteria in the same way. It is a more effective bacteria killer and allows the water to taste better.
 * However it doesn’t last as long as the chlorine and is also more expensive.