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[caption id="attachment_468" align="alignleft" width="300" caption="The students and the organisers, in front of the Ecole des Ponts ParisTech"][/caption]As the participation in the ATHENS programme is part of the students' education, they had to be evaluated at the end of the week. The teachers asked them to form small groups of 4 persons maximum - trying to mix the profiles - and to choose a subject in relation with the teaching targets of the week. Then the groups had to present their work in a concise way during the final session.You will find below the presentations and 2-pages papers they submitted.Group 1: Water services and sanitation in Brazil. Belo Horizonte, by Felipe Felix de Almeida (Ecole des Ponts ParisTech) and Eléonore Kerrand (Ecole des Ponts ParisTech) - textGroup 2: Bottled water vs tap water. Why do people drink bottled water? by Akos Illes (Budapest University of Technology and Economics - BME), Lilla Csepanyi (ENPC), Cui Fei (Delft University of Technology - TU Delft) and Dennis Wagenaar (TU Delft) - textGroup 3: The Use of Hydropower in Water Supply by Nele Byns, Kristien Leunis, Kristen Peeters and Lore Tonnet from the Katholieke Universiteit Leuven (KU Leuven) - textGroup 4: Water resources and war in Iraq by Irène Boyer-Souchet (Ecole des Ponts ParisTech), Kelly Floch (Ecole des Ponts PArisTech), Paul Lagrée (Telecom ParisTech) and Lénaïg Le Gall (Mines ParisTech) - textGroup 5: Comparison between Prague and Milan water system by Helena Fidranska (Czech Technical univerzity in Prague-CVUT), Grazia Mallamaci (Politecnico di Milano - PM) and Lorenzo Cozzi (PM) - textGroup 6: A general view of the water in Spain by Esther Hurtado, Maria Malla, Lorena Martin and Covadonga Pardo from the Universidad Politécnica de Madrid (UPM) - textGroup 7: Acid rains by Ali Al Mustafa, Insaf Ben Rehouma, Mathias Pinos Djoumessi and Linlin  Dong, from AgroParisTech