ABSTRACT
A safe water supply is an essential part of camp hygiene. Water intake for adults in temperate conditions is around 3 litres per day, but this can rise to as much as 10 litres per day in hot climates because of loss due to sweating. In addition, around 4 litres of water per person per day will be needed for cooking and washing up. Therefore considerable supplies may be required both at base camp and by field parties. In many cases, water obtained from rivers, lakes and ponds, as well as from taps and wells, carries a considerable risk of contamination. Spring water collected away from human habitation may be safer but it would be wise to treat even this water source.
