About us

aqua & waste International GmbH is an independent engineering and planning office in the field of environmental protection and is based in Hanover, Germany. Since its foundation in 2002, we have successfully implemented numerous projects worldwide in the fields of wastewater treatment, waste management, biogas production as well as project management and control.

The management consists of Prof. Dr.-Ing. Peter Hartwig, Dr.-Ing. Klaus Nel-ting and Dr.-Ing. Niklas Trautmann, who have worked on numerous research projects in addition to their long-standing experience in planning and consulting. Owing to their many years of activity in various associations, committees and working groups, aqua & waste International GmbH has a large worldwide network of experts and professional bodies within immediate reach.

The range of our planning and consulting services extends from analysis and conceptual design, through planning and contracting, to the realisation of projects in all our fields of expertise.

We are equally active for municipal and industrial clients in both German and international markets. We also actively participate in international and/or development cooperation projects for clients such as the Kreditanstalt für Wiederaufbau (KfW Development Bank), Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH and the United Nations Industrial Development Organization (UNIDO).

Our special focus is on the development and implementation of innovative solutions aimed at energy efficiency as well as climate and environmental protection. To this end, we work closely with universities as well as various expert committees and working groups (e.g., DWA, GWP). Likewise, we also actively contribute to knowledge transfer in the form of further education, seminars, and workshops.