IWR - Engineering Office for Water and Resource Management
Plan with us!
We design & manage water supply, drainage and wastewater treatment projects. In addition, we offer individual operational management and municipal consulting. In doing so, we always act competently, creatively and personally.

Dipl.-Ing. Frederik Maurer, Managing Director of IWR GmbH
What drives us
We place a special focus on the protection of the environment and the well-being of people. Therefore, our dedicated team develops and maintains a sustainable and economical infrastructure around water.
Where we come from
Our managing director Dipl.-Ing. Frederik Maurer founded the engineering office in 2012. He enthusiastically shares the knowledge he gained in his many years of experience in urban water management as well as in municipal operations with the IWR team.
What makes us strong
We regard ourselves as interdisciplinary problem solvers and enjoy taking on challenges. Deep knowledge, our reliable partners and sustainable thinking & acting make us strong.
Services of IWR GmbH
Our services in water management and resource management are multifaceted: we provide comprehensive advice on site drainage, water protection or storm water treatment issues. We also offer a range of other services such as municipal operations management / operations consulting, flood protection and heavy rainfall prevention or sewer rehabilitation. We are also one of the leading engineering companies in Germany when it comes to negative pressure drainage. Extensive expertise and many years of experience in urban water management make us a reliable partner at your side. Learn more about our services!
IWR GmbH: your competent engineering office for water management in Cologne
22. August 2025
Specialist planner for heavy rain prevention
Training successfully completed: Lena Unger is a DWA-certified specialist planner for heavy…
18. August 2025
“Kölle putzmunter” – IWR gets to work
Gloves on, pliers out: Well organized and safe on the go The IWR GmbH team took part in the…
17. July 2025
Feldatal through road: renovation soon to be completed
Pfingstweide in Feldatal: renovation work is nearing completion The Pfingstweide in Groß-Felda is…
16. May 2025
Rehabilitation of duck pond
Feasibility study for water stabilization: Ententeich Herne-Süd On behalf of the city of Herne, IWR…
14. March 2025
Sewer rehabilitation project in Pulheim
Sewer renovation project in Pulheim: Innovative energy conversion structure installed The project,…
8. January 2025
Deep well construction Merenberg
Securing the drinking water supply for the future The municipality of Merenberg in Hesse is…
28. November 2024
Fire station south – site drainage
Feasibility study - site drainage for new fire station south New construction of the southern fire…
18. November 2024
Feldatal through road: progress is being made!
Progress and challenges of the construction work in Feldatal Construction work on the Feldatal…
14. October 2024
Site drainage Historische Stadthalle Wuppertal
Inventory and assessment: Site drainage Historische Stadthalle Wuppertal Work on the listed town…
18. September 2024
Olympic distance triathlon
IWR successful at the Carglass Cologne Triathlon 2024 - Strong team, strong performances! On…