Nachfolgend ist eine auszugsweise Liste, der in der österreichischen Siedlungswasserwirtschaft aktiven Expertinnen und Experten, die auch in IWA Gremien aktiv sind. Die Liste erhebt keinen Anspruch auf Vollständigkeit.
| Name | Arbeitgeber | IWA |
| Eisenhut, Manfred | ÖVGW | Governing Assembly |
| Farnleitner, Andreas | TU Wien, IPCC Water & Health | Specialist Group Health Related Water Microbiology |
| Fuchs-Hanusch, Daniela | TU Graz | Specialist Group Water Loss |
| Fürhacker, Maria | Universität für Bodenkultur Wien | Specialist Group Assessment and Control of Hazardous Substances in Water |
| Kling, Walter | Wiener Wasser | Strategic Council, Board of Directors, IWA Fellow |
| Kölbl, Jörg | Blue Networks e.U | Specialist Group Water Loss |
| Krampe, Jörg | TU Wien | Specialist Group Design, Operation and Costs of Large Wastewater Treatment Plants |
| Lahnsteiner, Josef | VA TECH WABAG GmbH | Specialist Group Water Reuse |
| Langergraber, Günter | Universität für Bodenkultur Wien | Specialist Group Wetland Systems for Water Pollution Control Resource Orientated Sanitation, Strategic Council, Working Group Good Modelling Practice |
| Liemberger, Roland | Miya | Specialist Group Efficient Urban Water Management, Specialist Group Intermittent Water Supply, Specialist Group Water Loss, IWA Fellow |
| Muschalla, Dirk | TU Graz | IWA-IAHR Joint Committee on Urban Drainage: Working Group Sewer Systems and Processes, Working Group Modelling of Integrated Urban Water Systems |
| Paal, Wolfgang | ÖWAV | Governing Assembly |
| Perfler, Reinhard | Universität für Bodenkultur Wien | Specialist Group Statistics and Economics |
| Rauch, Wolfgang | Universität Innsbruck | Director of IWA Publishing Company, IWA Fellow |
| Schilling, Katerina | IAWD | IWA Fellow Steering Committee, IWA Specialist Group on Diffuse Pollution and Eutrophication |
| Sommer, Regina | Meduni Wien | Specialist Group Disinfection, Specialist Group Health Related Water Microbiology, Specialist Group Leaders Forum, Governing Members Forum |
| Starkl, Markus | Universität für Bodenkultur Wien | Specialist Group Sanitation and Water Management in Developing Countries |