For years the people of Evin-Malmaison in north-east France have lived and brought up children in a town which is dangerously polluted. The Metaleurop Foundry attracted workers and their families, it provided life to the area - but it has now killed it with the pollution, which lies deep in the soil. Twenty years after the factory closed, the scale of the scandal has only just emerged, thanks to a new residents campaign. But who will takes responsibility? Marine Hay meets the families here who say they can't live with lead seeping into their water supply, but can't leave because, who would buy their houses?