VWS Oil & Gas brings together all the oil & gas expertise from the VWS group under a common structure. This group incorporates the market leading European business units of VWS Westgarth, the oil & gas activities of VW STI and VWS MPP Systems; and the USA business units HPD, NA Water Systems and Whittier Filtration.

Veolia Water Solutions & Technologies (VWS) is the technology subsidiary of Veolia Water. The company specialises in the engineering, design and construction of turnkey facilities, and creates technological solutions that are integral to these units.

Veolia Water, the water division of Veolia Environnement, is the world leader in water and wastewater services. The company specialises in outsourcing services for municipal authorities, industry and service companies. Veolia Water serves over 130 million people worldwide. With 95,789 employees, its 2008 revenues amounted to €12.5 billion.

Veolia Environnement (Paris Euronext: VIE and NYSE: VE) is world leader in environmental services. With more than 312,000 employees the company has operations all around the world and provides tailored solutions to meet the needs of municipal and industrial customers in four complementary segments: water management, waste management, energy management and freight and passenger transportation. Veolia Environnement recorded revenue of €34.5 billion in 2009.