Created in 1981, TRESCH TRAITEMENT DES EAUX is a French company which provides services, products and equipment for industrial water treatment. Based in Chassieu (69), on the outskirts of Lyon, our 4000 m2 head office is home to: Our administrative and commercial offices The design office A physical and chemical analysis laboratory A 500 m2 manufactured equipment assembly workshop A 1000 m2 descaling product production and storage workshop A spare parts store