| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | desalination | North Africa | Common method for producing fresh water due to scarcity of natural water sources | 1 |
| 2 | distilled water | North Africa | Not commonly used for drinking due to the belief that it lacks essential minerals | 1 |
| 3 | water purification | North Africa | Water purification often involves desalination due to scarcity of freshwater sources | 1 |