|
Purification Method |
Description |
Performance (1-5) 1 being the best |
|
Granulated Activated Carbon |
Water passes over the carbon with a slightly electro-positive charge |
4 |
|
Distillation |
The heating of water to its vapour point |
3 |
|
Ozonation |
Super oxygenation of water |
4 |
|
Purchased bottled water |
Bottled water purchased in developing countries |
3 |
|
Reverse Osmosis |
A separation process using a semi-permeable membrane |
2 |
|
KDF Resin |
A filter containing a cartridge filled with zinc and copper to create electrolysis |
3 |
|
Ultraviolet filtering |
The use of light process to filter the water (typically military use) |
3 |
|
Solid Carbon Block Filters |
Combined Carbon Absorption |
1 |
|
Membrane Filters |
Hollow fibre filters - Portable and commercial water filtration devices |
1 |
|
Boiled water |
Boiling of water in a pot to 100 deg C (except high altitudes) |
1 |
|
Chemical Disinfection |
Chlorine or iodine tablets |
3 |
