Most paints for households or industry are based on water and, hence, are environmentally more compatible than paints based on solvents. Water-based paints, however, have one drawback: Microorganisms, such as bacteria, feel very comfortable and spread. This also affects paint shops of automotive industry and other sectors. Sterilization of industrial water and paints with electric impulses is the objective of the DiWaL cooperation project funded by the Federal Ministry of Education and Research (BMBF). This project is coordinated by researchers of Karlsruhe Institute of Technology (KIT) and executed in cooperation with partners from research and industry.