Vision 2030 : the resilience of water supply and sanitation in the face of climate change : technology projection study

This report provides information on drinking-water supply and sanitation facilities and their vulnerabilities to climatic events, as background for directing policy on drinking-water supply and sanitation development to minimize the potential impact of climate change on MDG target 7c. Regarding climate, the report focuses on changing rainfall patterns which are considered to have the greatest potential impact on water supply and sanitation facilities. Regarding drinking-water supply and sanitation facilities, the scope of the present report is limited to improved facilitie. Two timescales (up to 2020 and up to 2030) were a focus of this report and the corresponding report on climate change predictions. The document draws clear lines between the impact of changing rainfall patterns and the sustainability of different drinking-water supply and sanitation facilities. The report includes: a literature review of vulnerability and adaptability of drinking-water supply and sanitation facilities, linking climate change, particularly changing rainfall patterns, to water and sanitation access;  opinions from key water professionals on likely impacts of changing rainfall patterns on water supply and sanitation facilities; analysis of the available JMP data to forecast the number of people served by different technologies, by country, region and global totals in 2020; and an overall analysis of the resilience of water supply and sanitation facilities to changing rainfall patterns.