The System of Systems Approach applied to the eutrophication of sweet-water lakes and Black Sea West coast waters serves as a reference model for addressing all aspects of Climate Change Adaptation in Romania and the EU. Understanding the means to reverse the eutrophication processes in the context of Climate Change adaptation and development of innovative solutions for de-eutrophication of sweet-water lakes and coastal provides added value and means to contribute tu Health Ocean, seas, costal an inland water EU mission proposals.