34th WEDC International Conference, Addis Ababa, Ethiopia,May 09 Water, sanitation and hygiene: Sustainable development and multisectoral approaches A web based communication and information system tool for Water Management in Developing Countries C. Dondeynaz, P. Mainardi, C. Carmona-Moreno, JRC, Italy, A. Leone, EUROPEAID, This paper deals with the development of an innovative web-based communication and information system tool for water practitioners in Developing Countries. We introduce briefly the functionalities implemented in the web-based Communication and Information System which allows the specialised users in the Water field to improve the network communication through a virtual web-based system. Two implementations have been developed for two communities: 1) the AQUAkNOW Information system (http://www.aquaknow.net) for practitioners in the field; 2) the EUWI Communication and Information System (http://www.euwi.net) for policy makers in charge of the implementation of the European Union Water Initiative.