Astronomers searching for life on other planets generally look for water. Water in the liquid state represents the basic for all life on our earth. Although 2/3 of the earth’ surface is covered with water, only 2.5 % are available potentially as freshwater and only 1/3 of that part as potential drinking water. Upon the World Water Week 2017 it was underlined that 770 – 880 million people of the world do not have any secure access to drinking water. In December 2017, the catholic organisation started their annual call for donations also under the topic “No life without water”. Moreover, the international solution of this drinking water problem will become fundamental for the future universal peace [Symposia of World Water Week, 2017]. Of course, the rising sea levels may not be visible nowadays, however, climate change also goes hand in hand with increased extends of flooding all over the world, destroying houses and infrastructures. “So much water and nothing to drink” a speaker of the World Water Week Symposium citing an affected person. The affected regions have to be supplied with bottled water by helping organisations. The consequence: A rising amount of plastic bottles, to support another current global problem, i.e. the plastic pollution of the oceans. To look at this problem from different perspectives, six schools that are located at different seas and in different areas of Europe have come together to take a deeper look into such an important and multifaceted topic. The project will consist of different modules with each school specializing in a different topic, thus becoming an expert in this topic. During the mobilities activities will focus on that topic and after the mobilities, each school performs a follow-up course and compares the results to the situation in their country. The expert groups will be as follows: Germany - climate change and virtual water, Italy - water in art and literature, the importance of water for peace on earth, Turkey - energy gained from water, water purification, Portugal - water and tourism, UK - water and economy, Norway - microplastic in the sea and on the coast.Additionally, each school analysis water samples of their own area according to agreed methods each year and puts the results into a database. Thus, we diskuss at the end of the project whether there has been a change - to the better or the worth - and whether programmes introduced by the governments work. Furthermore surveys are going to be designed and conducted at several stages of the project in which the inhabitants of the towns interviewed. Evaluating these surveys we want to find out whether the awarness of a need of sustainable water use has changed within the three years of the project and whether campaigns show success or not. We also want the students to start their own campaigns to increase awarness among their fellow students and the wider community (web-site, blog, social media challenge, petition, designing and producing coffee-to-go cups, designing lables for local companies that produce bottled water, ... - depending on the students' own ideas).The overall outcome of the project is going to be a jointly written scientific report that coveres all the different facets as well as art exhibitions and digital products (blog, web-site, ...)