Public Authorities & Public Water Supply
national
- Bundeswehr Gerätehauptdepot, Darmstadt | German Federal Armed Forces, Darmstadt
- City of Berlin
- City of Bochum
- City of Chemnitz
- City of Freiburg i. Br.
- City of Köln (Cologne)
- City of Magdeburg
- City of Mönchengladbach
- City of Nürnberg
- City of Pforzheim
- City of Salzgitter
- City of Senden
- City of Staßfurt
- City of Tübingen
- City of Viernheim
- City of Völklingen
- City of Weißenhorn
- City of Werdohl
- Der Senator für Umwelt, Bau, Verkehr und Europa – Bremen | Senate of Bremen
- E.ON IT GmbH, Hannover
- Freie und Hansestadt Bremen | City of Bremen
- Freie und Hansestadt Hamburg | City of Hamburg
- is:energy GmbH, Hannover
- RWE IT GmbH, Essen
- Städtische Werke AG Kassel | Municipal Utilities of Kassel
- Stadtwerke Bonn GmbH | Municipal Utilities of Bonn
- Stadtwerke Kiel AG | Municipal Utilities of Kiel
- Stadtwerke Lübeck GmbH | Municipal Utilities of Lübeck
- Stadtwerke Ramstein-Miesenbach GmbH | Municipal Utilities of Ramstein-Miesenbach
international
- Department of Natural Resources and Environment (DONRE) | Dalat – Vietnam
- Hebei Hydraulic Research Institute | Shijiazhuang – P.R. China
- High Commission for the Development of ArRiyadh | Riyadh – Saudi Arabia
- Kingdom of Bahrain Ministry of Municip. Affairs & Agric. |Manama -Bahrain
- Ministry of Energy and Water | Beirut – Lebanon
- Suffolk County Government | New York – USA
- UNDP Ministry of Energy and Water | Beirut – Lebanon
- Yuncheng City branch of Hydrology and Water Resources Survey | Yuncheng – P.R. China
Consulting & Industry
national
- Alenco Environmental Consult GmbH, Kandel
- Alenco Environmental Consult GmbH, Essen
- ARCADIS Consult GmbH, Erfurt
- ATREMIS Ingenieurgesellschaft mbH, Bad Homburg
- Audi AG, Ingolstadt
- BASF – The Chemical Company , Limburgerhof
- BAYERNOIL Raffineriegesellschaft mbH, Ingolstadt
- Bernd Gebauer Ingenieure GmbH, München (Munich)
- CONSULAQUA Geo-Infometric, Hildesheim
- CONSULAQUA Hamburg GmbH, Hamburg
- Evonik Degussa GmbH, Rheinfelden
- Evonik Industries AG, Hanau-Wolfgang
- Ford Werke GmbH, Köln (Cologne)
- FRAPORT AG, Frankfurt am Main
- FUGRO-HGN GmbH, Nordhausen
- Grontmij GmbH, Bremen
- Heraeus Holding GmbH, Hanau
- HPC AG, Leipzig
- InfraLeuna GMBH, Leuna
- INSTITUT FRESENIUS GmbH, Taunusstein
- K+S IT-Services GmbH, Kassel
- K-UTEC AG Salt Technologies, Sondershausen
- K+S Aktiengesellschaft, Kassel
- LEUNA-WERKE GmbH, Leuna
- Lieberr-Hydraulikbagger GmbH, Ahrensfelde | Production site of Liebherr Group
- Logica Deutschland GmbH & Co KG, Bremen
- Marquard & Bahls AG, Hamburg
- MGS Europe Gmb, Erkelenz |Subsidary of Marton Geotechnical Services Ltd (MSG), GB
- Oiltanking GmbH, Hamburg
- RAG Montan Immobilien GmbH, Essen | RAG AG
- RWE Service GmbH, Dortmund
- Shell Deutschland Oil GmbH, Köln (Cologne)
- Siemens AG, Berlin
- Siemens Business Service GmbH Co. OHG, Frankfurt/Main
- Solvay Chemicals GmbH , Bernburg
- Solvay Chemicals GmbH, Rheinberg
- T-Systems Enterprise Services GmbH, Bonn
- TÜV Pfalz e. V., Kaiserslautern
- TÜV Rheinland Industrie Service GmbH, Köln (Cologne)
- VACCUMSCHMELZE GmbH & Co. KG, Hanau
- WESSLING Holding GmbH & Co. KG, Altenberge
- Zurich Insurance Company Ltd, Frankfurt / Main
international
- ACTED Agency for Technical Cooperation and Development | Kabul-Afghanistan
- ACWADAM | Pune, Maharashtra
- CNRS National Council for Scientific Research | Beirut – Lebanon
- Dept of Geology and Mineral of Vietnam | Nha Trang – Vietnam
- ELARD Group. Beirut Lebanon
- GETRAG Ford Transmissions GmbH | Blanquefort cedex – France
- Kellerhals + Haefeli AG | Bern – Schweiz
- Metallwerke Refonda AG | Zurich – Schweiz
- Park Teknik | Besteleper / Ankara – Turkey
- Service géologique du Luxembourg | Luxemburg
- SITA Remediation | Blanquefort cedex – France
- The Gillette Co. | Needham – USA
Research & Development
national
ITT Institute for Technology and Resources Management in the tropics and Subtropics – FH, Cologne
- FH Nordostniedersachsen, Suderburg
- Helmholtz-Zentrum für Umweltforschung GmbH, Leipzig
- Justus-Liebig-University Gießen
- Martin-Luther-University Halle-Wittenberg, Halle
- Ruhr-University Bochum
- Steinmann-Institute for Geology, Mineralogy und Paleontology – University of Bonn
- University of Bayreuth
- University of Stuttgart | Institute for Geotechnic
international
- Asociación de Canalistas del Emalse Recoleta | Ovalle – Chile
- CEAZA Centro de Estudios Avanzados en Zonas Áridas | La Sarena – Chile
- IFAD International Fund for Argricultural Development | Damascus – Syrien
- Michigan Technology University | USA
- NIBIO Norwegian Institute of Bioeconomy Research | As, Norwegen
- ULS Chile LTDA | Valparaíso – Chile
- University of Ankara | Turkey
- University of Kabul | Afghanistan
- Universiy of Natural Resources and Life Sciences, Vienna | Austria