VA TECH WABAG, a leading multinational water technology company, has secured a major contract from the City of Vienna’s Municipal Department MA 31 – Wiener Wasser for the expansion of the Donauinsel Water Works in Vienna, Austria. The project marks another significant milestone in WABAG’s European growth strategy while reinforcing its expertise in delivering advanced drinking water and wastewater treatment solutions for large-scale public infrastructure.
The contract strengthens WABAG’s position as a comprehensive technology partner capable of executing complex water treatment projects that address long-term sustainability and climate resilience. Once completed, the expanded facility will play a vital role in securing Vienna’s future drinking water requirements and enhancing the city’s water infrastructure.
As part of the project, WABAG will deliver the complete technology package for the new treatment plant. The scope includes process engineering, electrical systems, instrumentation and control, and building services. The facility will incorporate a multi-stage treatment process featuring oxidation, ozonation, advanced oxidation, filtration, activated carbon filtration and ultraviolet disinfection to ensure the production of high-quality drinking water.
The Donauinsel Water Works expansion is one of Vienna’s most significant water infrastructure investments in recent decades and forms an integral part of the city’s long-term “Wiener Wasser 2050” strategy. Designed to process up to 1,000 litres of water per second—equivalent to approximately 86 million litres per day—the upgraded facility will significantly strengthen Vienna’s drinking water network.
The project has been conceived to complement Vienna’s existing alpine spring water supply by creating an additional groundwater-based source capable of meeting growing demand. Groundwater extracted from protected well fields will undergo advanced treatment before being supplied to the city’s distribution network. The additional capacity is expected to improve supply reliability, support population growth and help address future challenges arising from climate change and seasonal demand fluctuations.
Construction and commissioning of the overall facility are scheduled for completion by 2030, followed by a phased acceptance process. The project will serve as a flagship reference for WABAG in Austria and further enhance the company’s presence in the European water infrastructure market.
Commenting on the development, Mahmut Gedek, Chief Executive Officer – Europe Cluster, said, “Winning this prestigious project is an important achievement for WABAG. The expansion of the Donauinsel Water Works represents a critical investment in Vienna’s long-term water security and reflects the confidence placed in our engineering capabilities and water treatment technologies. We are proud to contribute our international expertise to a project that will serve the city for decades to come.”
With decades of experience in delivering advanced water treatment facilities across global markets, WABAG continues to strengthen its portfolio of sustainable infrastructure projects. The latest contract underscores the company’s commitment to supporting cities and utilities with reliable, future-ready water management solutions that address growing urban needs while promoting environmental sustainability and resource resilience.
