 Water plays an essential role in Austria and creates an economically vocational advantage thanks to its important supply. Therefore, our economy can be strengthened by water-related actions. One of the methods of development in water check is to reduce the currently high water consumption and wastewater generation in particularly water-intensive commercial and industrial sectors, like for example the food or the metal surface treatment industry. A project goal is to be achieved primarily through the development of a new efficient and standardized to-call I water check motor audit methodology. Based on that, SMEs should be able to identify and select cost-effective and efficient improvement measures. The development of the E water check method includes an efficient methodology for conducting standardized and quality-assured water audits, a clearly structured procedure model for conducting water audits as a basis for a later standardization of these audits, and a new systematic optimization method with new optimization algorithms to be developed for identifying techno-economic solutions for water optimization. These algorithms form the basis for future digitalization of the audit method. The implementation of the identified and proposed measures, this has a direct effect on the water footprint of the products produced and the competitiveness of the companies.