One of the major goals of water supply programmes is to provide enough water to meet
drinking, cooking and hygiene needs. In this chapter, personal hygiene needs include
bathing, hand washing. Domestic hygiene needs are related to the upkeep and cleaning of
the household environment including the cleaning of water storage containers, cookware
and utensils. Providing enough water to meet hygiene needs is very important because
diarrhoeal disease that is a major cause of death in emergencies often occurs where
hygiene is poor. Adequate quantities of water are needed to keep up good hygiene
practices and thus lower the risk of diarrhoeal diseases.
In developing countries, providing people with increased amounts of water is more
effective in protecting against faecal-oral pathogens than providing them with cleaner
water. At least fifteen litres per person per day is needed to maintain human health. While
the availability of water is influenced by the situation, more water can almost always be
obtained with more resources (more wells, trucks or pipes). Since obtaining water in arid
areas is expensive and the relationship between water quantity and health is not well
understood, there is a tendency not to invest enough in water infrastructure when other
demands seem more serious. Therefore, monitoring the availability of water during
emergencies is an essential component of a public health programme.