The First Rule of the Sahara
Every experienced desert traveller, guide, and survival instructor says the same thing: water is not a comfort item — it is an operational necessity. In the Sahara, dehydration can become dangerous within hours, and incapacitation can follow rapidly in high temperatures. Planning your water supply is not an optional logistical detail; it is the foundation of every journey into remote desert terrain.
How Much Water Do You Actually Need?
In cool conditions, the body needs roughly 2–3 litres of water per day at rest. In the Saharan summer, active travellers can lose 1 litre of sweat per hour in high heat. A general planning figure for desert conditions is:
- Minimum (cool conditions, low exertion): 3–4 litres per day
- Standard (moderate conditions, walking/driving): 5–7 litres per day
- Hot conditions (35°C+, physical activity): 8–12 litres per day
Always plan for more than you expect to need. A supply surplus is never a problem. A deficit can be fatal.
Carrying Water: Container Options
| Container Type | Advantages | Disadvantages |
|---|---|---|
| Jerricans (20L plastic) | Cheap, stackable, easy to find across North Africa | Heavy when full, can crack in extreme heat |
| Stainless steel bottles (1L) | Durable, taste-neutral, can be boiled in | Heavy per litre, expensive |
| Soft-sided collapsible containers | Pack flat when empty, lightweight | Less durable, harder to clean |
| Traditional goatskin (guerbas) | Keeps water cool through evaporation, local availability | Requires maintenance, can impart taste |
For vehicle-based travel, 20-litre plastic jerricans remain the practical standard across the Sahara. Carry at least one more than you think you need, and store them out of direct sunlight where possible.
Sourcing Water in the Field
Wells (puits)
Traditional wells dot Saharan routes, particularly along old caravan corridors. They vary enormously in reliability and water quality. Always confirm a well's status with local knowledge before depending on it as a resupply point. Water from wells should be treated before drinking (see below).
Oases and Villages
Inhabited oases and towns are your most reliable resupply points. Fill every container whenever you are in a settlement — you cannot know when the next opportunity will arise.
Never Rely on Finding Water
Do not travel into remote areas expecting to find water. Plan as if every water source on your route is dry or unavailable, and treat any found water as a bonus.
Water Purification
Well and surface water in desert regions can contain bacterial contamination. Methods for making it safe to drink include:
- Boiling: Effective but fuel-intensive. Bring to a rolling boil for at least one minute.
- Chemical treatment (chlorine tablets or drops): Lightweight, affordable, widely available. Wait the specified contact time before drinking.
- Filtration (ceramic or hollow-fibre filters): Removes protozoa and bacteria; pair with chemical treatment for viruses.
- UV purification pens: Effective against most pathogens in clear water; requires a charged battery.
Signs of Dehydration to Watch For
- Dark yellow or orange urine — your most reliable early indicator
- Headache or dizziness
- Reduced urination
- Dry mouth and fatigue
- Confusion or impaired decision-making (severe stage — this is an emergency)
Hydrate proactively — drink before you feel thirsty. By the time thirst registers in desert heat, you are already mildly dehydrated.
Electrolytes Matter Too
Drinking large volumes of plain water while sweating heavily can deplete sodium and other electrolytes. Carry electrolyte sachets or salt tablets, and include salty foods in your desert diet. This is one reason traditional desert travellers eat dates with salt — both electrolytes and fast energy in one portable package.