In comparison with previous achievements connected with implementation of the European Union legislation related to the water resources management, the potential critical points of the Water Framework Directive implementation in Europe and in Poland are presented. In assessment of potential risk, organization of the implementation process, its financing and schedule, as well as data issues were considered. The demanding schedule of the Directive implementation is based on six-year cycle of planning, with established logical sequence of particular actions. Realization of each action on time, let us to go to the next point of the schedule. In order to implementation European regulations coordination of work and cooperation among all institutions involved in the whole process is necessary. Only mobilization and integration of circles connected with water resources management, allow to work out the best solutions, which allow to fully implement of the WFD resolutions. From among already finished work related to the Directive, in this paper Authors focused on experience connected with realization: “Assessment of the hazard that aggregated water bodies will fail to meet the environmental quality objectives” and “Assessment of the risk that aggregated water bodies will fail to meet the environmental quality objectives” in pilot catchment area of ...