The NoMix toilet systems of Eawag’s main building have been in operation for three years. So far, NoMix toilets, waterless urinals and urine pipes do not show any clogging problems and no odour problems occurred inside the building. However, outside the building, odour problems occurred because of ammonia gas emissions from the urine pipes. For the moment, the most important remaining problem for an efficient separation of urine and faeces is the correct use of the NoMix toilets by non-acquainted users.
GOOSSE, P. (2009): NoMix-Toilettensysteme. Erste Monitorergebnisse vom Forum Chriesbach. Duebendorf: Swiss Federal Institute for Environmental Science (EAWAG) URL [Accessed: 10.08.2010]