Nachfolgend die Liste der in der österreichischen Siedlungswasserwirtschaft aktiven Expertinnen und Experten, die auch in IWA Gremien aktiv sind.
| Name | Arbeitgeber | IWA |
| Eisenhut, Manfred | ÖVGW | Governing Assembly |
| Farnleitner, Andreas | TU Wien | Health Related Water Microbiology |
| Fuchs-Hanusch, Daniela | TU Graz | Water Loss Specialist Group |
| Fürhacker, Maria | Universität für Bodenkultur Wien | Assessment and Control of Hazardous Substances in Water (ACHSW) Groundwater Restoration and Management |
| Kaindl, Nikolaus | Forest Industry | |
| Kling, Walter | Wiener Wasser | Strategic Council |
| Kölbl, Jörg | Blue Networks e.U | Water Loss Specialist Group |
| Krampe, Jörg | TU Wien | Design, Operation and Costs of Large Wastewater Treatment Plants |
| Kroiss, Helmut | TU Wien | Board of directors |
| Lahnsteiner, Josef | VA TECH WABAG GmbH | Water Reuse |
| Langergraber, Günter | Universität für Bodenkultur Wien | Wetland Systems for Water Pollution Control Resource Orientated Sanitation Strategic Council Good Modelling Practice (Working Group) Maintreaming the Use of Treatment Wetlands (Task Group) |
| Liemberger, Roland | Miya | Efficient Urban Water Management Specialist Group Intermittent Water Supply Specialist Group Water Loss Specialist Group Water Loss 2018 – Chair Scientific Committee IWA Fellow |
| Loderer, Christian | Kompetenz Zentrum Wasser Berlin GmbH | Instrumentation, Control and Automation |
| Matsche, Norbert | TU Wien | Design, Operation and Costs of Large Wastewater Treatment Plants |
| Muschalla, Dirk | TU Graz | Modelling and Integrated Assessment |
| Paal, Wolfgang | ÖWAV | Governing Assembly |
| Perfler, Reinhard | Universität für Bodenkultur Wien | Statistics and Economics |
| Rauch, Wolfgang | Universität Innsbruck | Director of IWA Publishing Company IWA Fellow |
| Reischer, Georg | TU Wien | Health Related Water Microbiology |
| Schilling, Katerina | IAWD | IWA Fellow |
| Sommer, Regina | Meduni Wien | Disinfection Health Related Water Microbiology |
| Starkl, Markus | Universität für Bodenkultur Wien | Sanitation and Water Management in Developing Countries |
| Theuretzbacher-Fritz, Heimo | TU Graz | Benchmarking and Performance Assessment |
| Wagner, Michael | Microbial Ecology and Water Engineering | |
| Zessner, Matthias | TU Wien | Watershed and River Basin Management |