Due to climate change and longer periods of drought, natural fresh water resources are becoming increasingly scarce. Nevertheless, several billion cubic meters of water are used annually for production processes in the manufacturing sector. The resource-saving use of water, especially in industrial production processes, is therefore crucial. This is where the "ReWaMem" project, funded by the German Federal Ministry of Education and Research (BMBF) and led by the Kompetenznetzwerk Wasser und Energie e.V., comes in. Using the laundry and textile cleaning industry as a testing ground, the consortium intends to develop new technologies over the next three years that treat process wastewater in such a way that it can be fed back into the cleaning process as fresh water. The aim is to significantly reduce freshwater intake from rivers.