Any geographical area independently administered by a sovereign government and having interest in the activities of the Commission is eligible to become a National Committee (NC). The Commission advocates for the National Committees to be broad-based, multi-disciplinary and should provide a platform for collaboration among various institutions having related aims within their countries.

The membership of the Commission consists of professionals: planners and policy makers; water managers; irrigation and agriculture engineers; research scientists and educationists; engaged in the related areas within the countries through their National Committees (NC)  traditionally organized under the departments responsible for irrigation or agricultural water management.