The Communauté d'agglomération Saint Germain Boucles de Seine is the communauté d'agglomération, an intercommunal structure, in the western suburbs of Paris.
It is located in the Yvelines and Val-d'Oise departments, in the Île-de-France region, northern France.
[2] The communauté d'agglomération consists of the following 19 communes, of which one (Bezons) in the Val-d'Oise department:[1][3]
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