In the water sector, through affiliates such as Lyonnaise des Eaux, Eurawasser, Agbar, Lydec, United Water, Ondeo Industrial Solutions, Safege, and Degrémont, SUEZ Environment takes action from studies, engineering, construction of water treatment plants to operation and delegated management of services.

In the waste sector, through SITA France, SITA Deutschland, SITA Belgium, SITA Sweden, SITA UK ..., and specialised affiliates such as Novergie, Agro Development, and Teris, SUEZ Environment takes action from waste collection, recycling, treatment and disposal, to street cleansing or rehabilitation of industrial sites.

In 2004, SUEZ Environment presented a 11.4 billion Euros of consolidated sales turnover, and with a staff of 72,780 employees supplied drinking water to 80 million people around the world, and its cleansing affiliates treated some 48 million tons of waste during the year.