WHO Technical Note No. 4: Rehabilitating small-scale piped water distribution systems

The damage caused by natural disasters to networks for piped drinking-water distribution can be widespread and extensive. It can range from minor breaks to complete loss of whole sections of the system. A systematic survey of the entire network is the only way of identifying the true extent of the damage. This may not be possible in an emergency where the priority is to re-instate a basic level of supply. This technical note examines these priorities and the process of rehabilitating small-scale piped water distribution systems.

This is one of a series of four-page highly illustrated notes prepared by WEDC for the World Health Organization (WHO) to assist those working immediately or shortly after an emergency to plan appropriate responses to the urgent and medium-term water and sanitation needs of affected populations.

The notes are relevant to a wide range of emergency situations, including both natural and conflict-induced disasters. They are suitable for field technicians, engineers and hygiene promoters, as well as staff from agency headquarters.

Prepared for WHO by WEDC. Authors: Sam Kayaga and Bob Reed. Series Editor: Bob Reed. Editorial contributions, design and illustrations by Rod Shaw Line illustrations courtesy of WEDC / IFRC. Additional graphics by Ken Chatterton.

© World Health Organization 2013. All rights reserved.