For the realization of its objectives the Association has created technical committees and regional divisions, whose chair and leadership team are selected in accordance with the By-laws of the relevant committee or regional division chairmen are appointed by council. The duties, powers and structure of the committees and divisions are described in their By-laws.

The Governance Structure of IAWEES is constituted as follows:

1. Technical Divisions: Committees and Working Groups
2. Regional Divisions
3. National and Regional Chapters
4. Governing Council: Composed of Global Representation of Members
5. Secretariat: Secretary, Joint Secretary and the Treasurer and Administrative Staff