Laboratoire Eau Environnement et Systèmes Urbains (Leesu)

Recent publications

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Observer la ville par le prisme des eaux usées Présentation de l’observatoire mis en œuvre par le Siaap en Île-de-France
M. Lopez Viveros, S. Azimi, E. Vulliet, Julien Le Roux, R. Moilleron, V. Rocher
, 2023, 4, pp.13-19. ⟨10.36904/202304013⟩
Fabric control on strain and rupture of heterogeneous shale samples by using a non-conventional mechanical test
Olivier Fouché, Hervé Wright, Jean-Michel Le Cléac'H, Pierre Pellenard
, 2004, 26 (1-4), pp.367-387. ⟨10.1016/j.clay.2003.12.014⟩
Describing the Geometry of 3D Fracture Systems by Correcting for Linear Sampling Bias
Olivier Fouché, Jean Diebolt
, 2004, 36 (1), pp.33-63. ⟨10.1023/B:MATG.0000016229.37309.fd⟩
Modélisation de la surface piézométrique des aquifères fissurés en zone de socle précambrien métamorphisé : cas du bassin versant du Sassandra (sud-ouest de la Côte d’Ivoire)
Théodore Koffi Yao, Olivier Fouché, Emmanuel Konan Kouadio, Marie-Solange Oga, Théophile Lasm
, 2015, 28 (2), pp.105-117. ⟨10.7202/1032293ar⟩
3D Hydraulic Modeling of a Complex Alluvial Aquifer for Groundwater Resource Management
Mingxuan Du, Elodie Zavattero, Qiang Ma, Olivier Delestre, Philippe Gourbesville, Olivier Fouché
, 2016, 154, pp.340-347. ⟨10.1016/j.proeng.2016.07.487⟩

Supervisory authorities

Member of

presentation of the research program EGOUT: "Extended Geochemical Observation of Urban Trajectories"

by Administrateur - published on , updated on

Years: 2022 - 2025

Name: Extended Geochemical Observation of Urban Trajectories

Acronym: EGOUT



Nutrition, health, well-being… How can we get policy relevant and multi-thematic information on the typology and evolution of urban systems? Polls, surveys, census and… sewers!

Inspired by latests developments in Sewage Chemical-Information Mining, and consolidated by our recent successes, the EGOUT project aims at developing an objective, reactive and integrated observatory of the evolution of Paris by monitoring a large array of geochemical indicators and confront them to socio-economic metrics. We will produce maps of geochemical heterogeneities that will be analysed in the light of socio-economic. We will monitor the evolution of selected indicators to track socio-economic trajectories. Citizens, public policymakers and practitioner’s involvement will be ensured through a co-design and a participatory research action process.


Develop an observatory of practices of the Paris population based on the geochemistry of matters transported and accumulated in sewer networks.


WP1: Spatial distribution and definition of new indicators
  • Reference state
  • Map of geochemical inequalities
  • Comparison to socio-economical maps
  • Definition of new indicators of the urban metabolism
  • Determine weaknesses
  • Urban planning tools
WP2: Interventional research with citizens
  • Implication of citizens
  • Evaluation of involvement, actors, levers of commitment
  • Better understanding of the dynamics of matters
WP3: Temporal trajectories
  • Geochemical trends in urban waters
  • Retro-observation on sediments accumulated in sewers
  • Warning systems
  • Socio-environmental control acting on matter fluxes