OFIS has offices in France and international relays that enable its experts to carry out the missions entrusted to them, from the simplest to the most complex. Head OfficeWATER Business Unit Paris & WestWATER Business Unit East region [](/en/get-know-us/our-sites.md?display=switcher_google_map "Map") [](/en/get-know-us/our-sites.md?display=switcher_grid "Grid") ### [Aix-en-Provence offices](/en/get-know-us/our-sites/aix-en-provence-offices "Aix-en-Provence offices") 350, avenue Guillibert de la Lauzière Parc du Golf - Bâtiment 19 Aix-en-Provence 13856 France [More details](/en/get-know-us/our-sites/aix-en-provence-offices "Aix-en-Provence offices") ### [Aubervilliers Head office](/en/get-know-us/our-sites/aubervilliers-head-office "Aubervilliers Head office") 30 rue Madeleine Vionnet Aubervilliers 93300 France [More details](/en/get-know-us/our-sites/aubervilliers-head-office "Aubervilliers Head office") ### [Bordeaux offices](/en/get-know-us/our-sites/bordeaux-offices "Bordeaux offices") 113 rue Jules Guesde Floirac 33270 France [More details](/en/get-know-us/our-sites/bordeaux-offices "Bordeaux offices") ### [Head Office](/en/get-know-us/our-sites/head-office "Head Office") 30 rue Madeleine Vionnet Aubervilliers 93300 France [More details](/en/get-know-us/our-sites/head-office "Head Office") ### [Lyon offices](/en/get-know-us/our-sites/lyon-offices "Lyon offices") 109 rue du 1er mars 1943 Villeurbanne 69100 France [More details](/en/get-know-us/our-sites/lyon-offices "Lyon offices") ### [Nantes offices](/en/get-know-us/our-sites/nantes-offices "Nantes offices") 6 rue Nathalie Sarraute TSA 90525 Nantes cedex 2 44205 France [More details](/en/get-know-us/our-sites/nantes-offices "Nantes offices") ### [Strasbourg offices](/en/get-know-us/our-sites/strasbourg-offices "Strasbourg offices") 31 allée de l'Economie Wiwersheim 67370 France [More details](/en/get-know-us/our-sites/strasbourg-offices "Strasbourg offices") International : +331 85 57 74 62 -