Legal Notices

Editor, Conceptual Design and Implementation

German Institute of Urban Affairs (Difu) gGmbH
Zimmerstrasse 13-15
10969 Berlin

Telephone: + 49 30 39001 0
Telefax: + 49 30 39001 100

Geschäftsführer: Dr. Busso Grabow
Sitz: Berlin
Registergericht: Amtsgericht Charlottenburg
Registernummer: HRB 114959 B
Gesellschafter: Verein für Kommunalwissenschaften e.V.
Steuer-Nr.: 27/601/51911
Umsatzsteuer-ID: DE 261590461

Department in Cologne
Research Division Environment
Auf dem Hunnenrücken 3
50668 Köln

Telephone: + 49 221 340308 0
Telefax: + 49 221 340308 28

Project Contact
Jens Libbe, Telephone: +49 30 39001 115, E-Mail:

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Accessibility of PDF Documents
In general, since 2007 all PDF files on our pages were provided with maximum accessibility. However, many PDF files provided to us cannot changed subsequently and their accessibility is not guaranteed. In these cases we endeavour to provide alternative information. It is our goal to provide PDF documents with maximum accessibility or deliver its contents in HTML format.

If you need contents from older documents in a accessible format please send an e-mail to

All informationen on our website has been carefully researched and compiled in all conscience. Nevertheless we cannot assume no liability for its accuracy, guarantee, correctness, completeness or timeliness. We reserve the right to complete, to change or to delete any of our information. We would like to notice, that in cases of references to legislation, regulations, official communiques etc. only the current official version, as published in the related official publication contains mandatory information. Any legal references, recommendations and information are non-binding.

All pages are programmed carefully and all files and programs are virus checked. Nevertheless we explicitely point out that errors in the digitalizing process might occur. We do, therefore, not assume any liability for failures or malfunctions, defect files or display formats, damages resulting from opening or downloading data from this website, through computer viruses or through software installation or software use.

On our website we provide links to other web pages. The following statement applies to all links we provide:

"German Institute of Urban Affairs (Difu) emphasize explicitely, that it has no control over the design and contents of third party websites, and accepts no responsibility neither for their content nor for any loss or damage that may arise from the use of these sites. We check and evaluate links to other internet sites cursorily while setting the links to our web pages. A continuous examination of the contents of third party websites is not intended and not possible. German Institute of Urban Affairs (Difu) dissociates itself expressively from all contents on other web pages which may be covered by criminal or liability law, which is contrary to public policy or morality. This declaration applies to all links on our website and to all contents of pages to which the links or banners refer to. We are neither responsible for the accuracy of the content published on these websites, nor for its legality or compliance with copyright law. We assume no liability for damage caused by the use of internet services linked from web pages or banners."

Should we become aware of the illegality of any website to which we provide a link, we will immediately remove the link without permission from its provider.

Copyright of Images
Unless stated otherwise the copyright owner of images is the German Institute of Urban Affairs (Difu) or - on the project pages - the Nawam-Inis projects.
Copyright photo within Nawam-Inis Banner: ©
Copyright photos on start page (photo collage under the banner), from left to right and from to to bottom:
© Pixler -
Foto: sustainable sanitation alliance unter CC by
The use of the photos and pictures is only allowed by prior agreement with the German Institute of Urban Affairs (Difu). The image copyright for images used on this website have been carefully checked and clarified with the authors. However should anyone consider that your rights have been infringed, we kindly ask you to contact us, e-mail:

Unless otherwise expressly statet, it is not allowed to use the images and graphics published on this website without prior consultation with the internet editors (

© of all information and data (unless otherwise noted) on this website: German Institute of Urban Affairs gGmbH