Industrial activities have introduced a certain level of metal pollution in river systems. The Deûle river, which passes through a former smelting plant (Metaleurop) near Douai city in northern France, has been impacted from 1894 to 2003 by lead and zinc discharges. Since 2003, Sita France (Suez Environnement) via AGORA project is decontaminating the area to install eco-industries devoted to waste recovery. This study was done to have a better understanding of both trace metal behavior and (...)