Decontamination of the Flix reservoir Historical milestone · Flix, Ribera d'Ebre, Tarragona Image of Flix, not of the place itself. A century of discharges from the factory left hundreds of thousands of tonnes of sludge with heavy metals and organochlorine compounds on the bed of the reservoir. Its extraction and confinement was one of the greatest environmental works in the country. siglo XXI Photo: Scs1978 (CC BY-SA 3.0) What to see and do in Flix