Work on Professional Bodies

The tewag management and staff participate actively in many professional bodies. This ensures that the company's scientific, technical and industry-specific know-how is always kept up to date. These activities also enable the company to contribute to the advancement of professional standards and the improvement of operating conditions, as well as to represent professional interests.

tewag GmbH is a member of the following professional bodies:


BDG - Berufsverband Deutscher Geowissenschaftler e.V.

(German Professional Association of Geoscientists)


Lessenicher Straße 1

53123 Bonn


Tel.: +49 (0)228 696601


Bundesverband Boden

Bundesverband Boden e.V.

(German Federal Soil Protection Association)


Frankfurter Straße 46

35037 Marburg


Tel.: +49 (0)6421 204452


Bundesverband Waermepumpe

Bundesverband WärmePumpe (BWP) e. V.

(German Federal Heat Pump Association)


Charlottenstraße 24, Tuteur Haus

10117 Berlin


Tel.: +49 (0)30 208799711


Ingenieurtechnischer Verband

Deutscher Verein des Gas- und Wasserfaches e.V.

(German Gas and Water Association)


Josef-Wirmer Straße 1-3

53123 Bonn


Tel.: +49 (0)2289188-5

Fax: +49 (0)2289188-990



Energieagentur Regensburg e.V.

(Regensburg Energy Agency)


Altmühlstraße 1 a

93059 Regensburg

Tel.: +49 (0)941 2984491-0
Fax: +49 (0)941 2984491-20



Fachsektion Hydrogeologie in dem Deutsche Gesellschaft für Geowissenschaften e.V. (FH-DGG)

(Hydrogeology Section within the German Society for Geosciences)


Kastanienweg 11

67434 Neustadt/Weinstr.


Tel.: +49 (0)6321 484784


Geothermische Vereinigung

Geothermische Vereinigung Bundesverband Geothermie e.V.

(German Federal Geothermal Energy Association)


Gartenstraße 36

49744 Geeste


Tel.: +49 (0)5907 545


Ingenieurtechnischer Verband

Ingenieurtechnischer Verband für Altlastenmanagement und Flächenrecycling e.V. (ITVA)

(German Scientific-Technical Association for Environmental Remediation and Brownfield Redevelopment)


Invalidenstraße 34

10115 Berlin


Tel.: +49 (0)30 48638280


Österreichische Geologische Gesellschaft (Austrian Geological Society)

c/o Geologische Bundesanstalt (GBA)


Neulinggasse 38

A-1030 Vienna


Tel.: +43 1 7125674-0

Fax : +43 1 7125674-56


Ingenieurtechnischer Verband

VDI e.V.

(Association of German Engineers)


VDI-Platz 1

40468 Düsseldorf


Tel.: +49 (0)2116214-0

Fax: +49 (0)2116214-169


Offices held by the Company Directors

Prof. Dr. Simone Walker-Hertkorn:

  • Member of the VDI 4640 standards committee: "Use of underground thermal energy"
  • Member of the LQS EWS working group of the Baden-Württemberg Environment Ministry
  • Member of the scientific advisory board of the German Federal Heat Pump Association
  • Member of the Board of KKE-BW e.V. (Competence Network for Climate and Energy in Baden-Württemberg)

Klaus Bücherl:

  • Deputy Chairman of the Association of German Geologists (BDG)
  • Member of the Shallow Geothermal Energy working group of the engineers' and architects' associations and chambers fee regulation committee (AHO)
  • Arbitrator for subcommittee F2 – Sampling – within the German Scientific-Technical Association for Environmental Remediation and Brownfield Redevelopment (ITVA)
  • Member of the ITVA subcommittees A1 Fees and C3 Expert accreditation
  • Member of the pool of expert assessors reviewing accredited experts pursuant to section 18 BBodSchG in Bavaria (subject area 5)

ITVA subcommittee F2 - Sampling - is currently working on the following topics:

  • Drafting of a discussion paper relating to passive sampling systems
  • Drafting of a contribution to the EU CityChlor project
  • Revision of the ITVA guide: "Solid sampling methods for investigation of suspect sites and inherited pollution"