Water Purification is needed to protect against water bourne infections such as cholera.
Chlorine[edit | edit source]
Iodine[edit | edit source]
This is not as effective as chlorine, however, it does not flavour the water as much.
Filtration[edit | edit source]
This provides immediate access to drinking water with no bad taste. However, it can be contaminated and very small viruses can get through.
Carbon[edit | edit source]
Carbon is added to remove odours.