Urine source separation in NoMix toilets with subsequent processing of urine offers the possibility to improve water pollution control and to recycle nutrients. Urine contains most of the nutrients ending up in wastewater and many micropollutants from the human metabolism. In most cases, efficient urine source separation would render nutrient removal at wastewater treatment plants obsolete. To obtain more stringent threshold values for phosphorus, merely a small technical effort would be necessary. The interdisciplinary research project NOVAQUATIS investigates the technical feasibility, social acceptance and possibilities of introducing urine source separation in Switzerland.