Martin Wegelin has been awarded with the prize of 200,000 francs for achievements in the field of solar water disinfection and in particular the Sodis project. The foundation’s president and former councillor of states, Mr. Carlo Schmid, said that Wegelin’s commitment and engagement rendered it possible that today Sodis is supported by many organizations and promoted by different stakeholders. Presently, the Sodis method is used daily by more than 5 million people in 28 countries. Eawag not only scientifically proved that the method works and how UV-light kills diarrhoea causing pathogens, but also which promotion strategies are most effective in disseminating the Sodis method. The award ceremony will take place in Chur, in the Grossrats Chamber, November 24th. More information about the foundation and Dr. J.E. Brandenberger, the inventor of the transparent viscose film «Cellophane» is presented  on their website.