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 | 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 (ACHSW) |
| Kaindl, Nikolaus | Specialist Group Forest Industry | |
| Kling, Walter | Wiener Wasser | Strategic Council |
| 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, Task Group Maintreaming the Use of Treatment Wetlands |
| Liemberger, Roland | Miya | Specialist Group Efficient Urban Water Management, Specialist Group Intermittent Water Supply, Specialist Group Water Loss, IWA Fellow |
| Kleidorfer, Manfred | Universität Innsbruck | Joint Committee on Urban Drainage Specialist Group |
| Matsche, Norbert | TU Wien | Specialist Group Design, Operation and Costs of Large Wastewater Treatment Plants |
| Muschalla, Dirk | TU Graz | Specialist Group Modelling and Integrated Assessment |
| 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 |
| 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 |
| Wagner, Michael | Microbial Ecology and Water Engineering |