The regional group Berlin / Leipzig is focused on the production and installation of a well-fitting sustainable and low maintenance water system. We place / put special emphasis on the practical cooperation. One of our central targets is realizing the projects under use of existing resources. A theme based education and training provides them with the possibility to help themselves. Addition contribution to sustainability will be reached by continued use of wastewater. We also want to give a contribution to sustainability by the continuing using of the wastewater. Ideally, the project will be a pilot project for hygienic drinking water supply and reclamation of all waste streams in small rural clinics in Africa.