The Flemish society for water supply 'De Watergroep' is the largest water company in Flanders. They are also a partner in the development of municipal sewerage networks and work, as an integral water company, on projects tailored for companies. The Watergroup delivers drinking water to 2,7 million customers in 170 Flemish municipalities, divided into West and East Flanders, Flemish Brabant and Limburg.