The aim of this study was to estimate the economic costs and benefits of a range of selected interventions to improve water and sanitation services, with results presented for 17 WHO sub-regions and at the global level. The results show that all water and sanitation improvements were found to be cost-beneficial, and this applied to all world regions. The main
HUTTON, G. HALLER, L. (2004): Evaluation of the Costs and Benefits of Water and Sanitation Improvements at the Global Level. Geneva: World Health Organisation (WHO) URL [Accessed: 01.11.2012]