Your engineering company for solutions in the water cycle
With more than 680 employees at over 30 locations, we develop and support around 2,500 projects in 13 countries every year in multidisciplinary teams. We are leaders in the development of solutions in Switzerland, Germany and Luxembourg in the specialist areas of wastewater, construction, digital planning, energy, geology, urban drainage, environment/sustainability, hydraulic engineering and water supply. To this end, we utilise the creative power of engineering and nature, science and technology and our experience. In this way, we realise economical solutions from a single source that are also ecologically forward-looking thanks to resource-saving processes and technologies. In this way, we set new standards and create added value for people and the environment - today for tomorrow and for people and nature.
We have been doing this for over 90 years and will continue to do so.
INGE H²SA, with HOLINGER supervision, wins the tender for the construction of a new wastewater treatment plant in Stahnsdorf. In collaboration with Sweco and AFRY, the Berliner Wasserbetriebe is replacing its old wastewater treatment plant in Stahnsdorf with a state-of-the-art plant with purification technologies and target dimensions of approx. 200,000 m³ SBR volume and 12 reactors | Commissioning is planned for early 2036.
Projects
Intelligent solutions - for future generations
HOLINGER's claim is to always be one step ahead. That is why we invest in research, development and innovation to make the latest technologies and processes accessible in our projects.
