Water is a crucial resource for humanity, generating and sustaining economic growth and prosperity. The European Water Framework Directive lays the EU water pollution strategy, and includes a list of priority substances which represent a significant risk to aquatic environment. The conventional water treatment technologies mostly rely on physical and biological processes which seem to be inadequate for effective removal of priority substances. Therefore, development of sustainable water treatment technologies requires application of advanced chemical processes. Although the conversion of pollutants is main criteria in evaluation of treatment efficiency, the environmental aspects of applied technology are related to the overall quality of treated water which can be expressed in the terms of ecological sum-parameters. The main goal of MEAoWT project is to propose sustainable technology for the treatment of water containing priority pollutants (pharmaceuticals and pesticides) and to provide the methodology for the prediction of environmental aspects of applied technology, as a powerful tool for water quality assessment and pollution control. For that purpose UV/H₂O₂, UV/S₂O₈^2- and ferrate(VI) oxidation processes will be applied for the degradation of selected priority pollutants in water. Experimental data will be used for development of models combining statistical, mathematical, mechanistic and structural approaches using advanced computational tools. Structural characteristics of water pollutants, degradation mechanisms and kinetics as well as operating parameters of treatment processes will be correlated with the quality of treated water in the terms of ecological sum-parameters. The methodology for prediction, assessment and control of the environmental aspects of water treatment technology will be proposed.