The Supervisory Board of the Ruhrverband consists of 15 members, seven of which are delegates from the communities and districts. Two members are representatives of the entities abstracting water from the Ruhr, one member represents the business community and five are employee representatives. The current Supervisory Board members as well as the board's committees can be found in a list.
The Supervisory Board monitors the Executive Board's management. According to the Ruhrverband act, at least two meetings of the Supervisory Board where questions about the future development of the Ruhrverband can be discussed in-depth have to take place every year. The Supervisory Board submits the economic plan as well as the plans on construction activities and other actions to the Assembly of Associates for decision-making and elects the Ruhrverband’s Executive Board.