In 2011, the Coopérative Régionale des Vins de Champagne (CRVC) was confronted with bringing into conformity its rainwater networks, as requested by the Communauté d’Agglomération de Reims. Due to the strict values for discharge to be reached, and the depth of the network, Saint Dizier Environnement then proposes to study in cooperation with the Communauté d’Agglomération, installing STOPPOL ® units .