The objective of the final project with thesis was to observe the future by the means of design. The subject was approached from the viewpoint of anticipation of exceptional states of emergency. In visions, the water purification plant was meant to be able to operate in case of a natural catastrophe, when drinking water cannot be purified in any other way. The motion for the final project with thesis came from the Department of Environmental Engineering, Teaching and Recearch of Savonia University of Applied Sciences. The aim of the project was to create visions of a mobile water purification plant and depict the visions with the help of professionally credible pictures. The results of the visualization were demonstrated by the means of 3D-modelling pictures. The future was approached by the means of the product concept method and global scenarios. The scenarios of the year 2025 published by the Royal Dutch Shell in 2006 were utilized in the final project with thesis. The impact of each scenario on the direction of the product system was introduced in the report. The background of the project initiates the reader into the current practice of water acquisition, water purification and the protection of the water system in Finland, and into the causality of the global water problems. The mobile water purification plant was regarded as a product system which consists of modules. Innovative solutions to the problems of the product system were created by the means of benchmarking. The visualizations dealt with the mobility, the assembly, and the communication of a water purification plant, the distribution of water, and the independent operation of the system in any possible circumstances. The conditions of use and the using environment of the movable water purification plant as part of humanitarian aid was contemplated by the author. The visualizations offer examples of what the purification plant could be like. The available purification technology was not defined but the modules needed at various stages of the purification processes were described considering the requirements of the full chemical purification process. The visual material enables all agents to create a unified image of the entire product system, which supports the incubation of new ideas and acts as an assistant tool for a conversation between various stakeholders.