Every third year the World Water Council organizes the World Water Forum in close collaboration with the authorities of the hosting country. The Forum is the largest international event in the field of water. The next World Water Forum will take place in Istanbul in 2009.
The World Water Council is financed primarily through membership fees and additional support is provided by the host City of Marseilles. Specific projects and programs are financed through donations and grants from governments, international organizations, and NGO's.