Essen / Rotterdam, 22 January 2026 - The Cornelsen Group is further expanding its international range of solutions in the field of environmental and water technologies: By acquiring a majority stake in Groundwater Technology, the Group is strengthening its expertise in soil and groundwater remediation as well as its presence in the BeNeLux region.
Groundwater Technology, based in Rotterdam, has been more than 35 years is one of the leading specialists for site-specific solutions in soil and groundwater remediation. The company covers the entire project life cycle - from analysis and planning to the implementation of complex remediation measures - and works for industrial, chemical and public clients in the Benelux region and Canada.
Groundwater Technology's technological profile also includes proprietary processes developed in the Netherlands, such as the Bio-Inspired Soil Improvement (BISI) approach, which uses nature-based principles to improve soil stability and optimise remediation results sustainably and efficiently
The integration of Groundwater Technology marks an important milestone for the Cornelsen Group: established processes, in-depth site expertise and innovative technologies will be added to the existing portfolio. At the same time, the Group's comprehensive range of solutions will be further expanded - particularly in light of the rapidly growing demand for effective PFAS remediation solutions in Europe
The founders and co-CEOs Yvo Veenis and Robert Heling will remain active in the company and retain a significant shareholding. Together with their experienced team, they will drive the technological development and growth of Groundwater Technology within the Cornelsen Group.
"What makes this partnership special is the combination of decades of practical experience, technical depth and a strong sense of responsibility towards the environment and society," says Dr Martin Cornelsen, CEO of the Cornelsen Group. "Together, we are creating the basis for further developing integrated, resilient solutions for complex environmental tasks, scaling them up internationally and making a measurable contribution to protecting the environment and water resources."
The collaboration is based on a long-standing relationship and a shared understanding of quality, engineering performance and sustainable implementation. The aim is to provide customers with even more comprehensive support along the entire value chain in future - from analysis and refurbishment to the long-term operation of technical solutions.
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