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This issue of the book series WASSER - ABWASSER - UMWELT, which means WATER, WASTEWATER and ENVIRONMENT, is the first issue ever to be published in English. It contains papers and posters that were presented during the 3rd IWA Odour and VOCs Conference - Measurement, Regulation and Control Techniques, held from 8th to 10th October 2008 in Barcelona as an IWA Specialist Conference by the IWA Specialist Group on Odours and Volatile Emissions (OVE). With some 230 participants, this conference was even larger than its predecessors, and the steadily rising number of participants not only shows a rising interest in all aspects of odour and volatile emissions, but also indicates that the next conference, to be held in October 2011 in Brazil, will also be a success.

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