Customer information The Opalium group is a subsidiary of Veolia in Fontenay sous bois, France, and provides water filtra- tion for communities which have to purify less than 10,000 cubic metres of water per day. Their fil- tration systems are mounted on skids (fully transportable system). This makes it possible to start up the water treatment plant very quickly. Primary customers include communities, as well as compa- nies such as Générales des

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