Improving the resilience of the economy in the face of uncertain climate change damages involves irreversible investments to scale up new technologies that are less vulnerable to the effects of climate change. The benefit of having such options includes the avoided welfare cost of diverting...

In this paper authors present a preliminary approach to the evaluation of policies and projects based on current thinking on cost benefit analysis and real option methodology and the authors' recent work on the same subject. Authors start from the assumption that economic agents undertake...

This report, developed for policy makers and sector development partners, highlights the manner in which the domestic private sector is successfully participating in the delivery of water and sanitation services in Niger. It outlines the factors for success as well as the challenges that need to...

This note summarizes lessons from the Water and Sanitation Program's (WSP) technical assistance to improve performance and cost-recovery at the Liberia Water and Sewer Corporation (LWSC) and Sierra Leone's Guma Valley Water Company (GVWC). The focus on cost-recovery reflects its critical...

This note explores the Bangladesh experience in implementing the widespread use of a private operator model for building and operating rural piped water schemes. Since the early 1990s, the World Bank has, through a series of development projects, designed, piloted, and attempted to scale up use...

Convenient access to safe water is central to human health and development. Water-borne disease remains a major cause of mortality and morbidity in the world, much of which could be eliminated by a combination of better water, sanitation and hygiene (WaSH). The WHO estimates that around 502 000...

This note provides guidance for cities in developing countries for managing the urban water cycle in a sustainable manner by using an Integrated Urban Water Management (IUWM) approach. After a brief introduction to the concept of IUWM, this note profiles the different IUWM approaches applied in...

Africa's urban population will triple by 2050. People in these rapidly growing cities need safe, convenient, and reliable water supplies. However, the proportion of Africa's urban population with improved water supply has barely grown since 1990. Research shows that water piped to the premises...