While the importance of sustainable water strategies is increasing in the industry, domestic SMEs mostly lack the necessary resources and know-how to increase their water efficiency. In cooperation with KMU Forschung Austria and V-Research, AEE-Intec addresses this problem within the ACR project iWaterCheck by developing a simple and efficient audit method that enables SMEs to reduce their water consumption. The survey of water demand and the identification of optimization potentials as well as water saving measures are central elements of the water audit.