Suez Environnement S.A. is a French-based utility company which operates largely in the water treatment and waste management sectors. Formerly an operating division of Suez, the company was spun out as a stand-alone entity as part of the merger to form GDF Suez on 22 July 2008. GDF Suez remains the largest shareholder of the company with a 35% stake. Suez Environnement shares are listed on the Euronext exchanges in Paris and Brussels.