- Boiling – The most basic method to ensure that bacteria is killed. However, this process does not eliminate traces of lead or mercury.
- Chlorination – The oxidizing agent, chlorine is dissolved in water to kill bacteria and then removed.
- Distillation – Water is heated till evaporation and cooled down.
- Filtration – Water passes through filters to remove chlorine, particles and other pollutants. Filters come in a variety consisting of oxidising filters, mechanical filters, neutralising filters and carbon filters.
- Reverse Osmosis – Water goes through a fine filter, eliminating much of the water’s natural ingredients.
Chapter: Water :: 26 June 2007
