The Forum Chriesbach is located on the Empa-Eawag site in Dübendorf. The office and research building, which also houses the library, training rooms and the staff canteen, has set new standards in sustainable development. When planning the building, the construction techniques and technology employed pushed the then available systems to their limits. For example, the building uses four times less energy than a conventional building; the office areas are neither heated nor cooled by conventional systems. And the installation of a sophisticated sanitation system - NoMix toilets which separate urine, rainwater used for flushing toilets - means that the latest research results of Eawag are tested in everyday situations. Almost 2000 visitors from Switzerland and abroad come to view the building each year and it has been the subject of numerous media reports and publications.