Water, sanitation and hygiene for the health of developing nations

The water and sanitation needs of the poor in developing countries are huge. To meet the target of water and sanitation for all by the end of 2025, some 2.9 billion people will have to receive improved water supplies, and 4.2 billion improved sanitation. The technologies used must be appropriate and, in particular, simple, affordable and sustainable. (C) 2003 The Royal Institute of Public Health. Published by Elsevier Ltd. All rights reserved.