Mézières-sur-Seine

Épône (French: [epon] ) is a commune in the Yvelines department in the Île-de-France region in north-central France. It is situated on the left bank of the River Seine 40 kilometres (25 mi) west of Paris. Together with Mézières-sur-Seine and La Falaise, it forms a settlement of around 10,000 inhabitants. Its inhabitants are known as Épônois. The name comes from the Latin Spedona and, according to Daniel Bricon, has no link to Epona the Gaulish goddess of horses and protector of horseriders.

The Mauldre (French pronunciation: [moldʁ]) is a 35 km long river in France. It is a left tributary of the Seine. Its basin area is about 410 square kilometres, which covers 66 municipalities corresponding to 400 000 inhabitants. Its source elevation is 135 m. The Mauldre flows into the Seine near Épône. One of its affluents is the ru de Gally, whose source is in the gardens of Versailles.

Porcheville (French: [pɔʁʃəvil] ) is a commune in the Yvelines department in the Île-de-France region in north-central France.

La Falaise (French pronunciation: [la falɛz]) is a commune in the Yvelines department in the Île-de-France region in north-central France.

Issou (French pronunciation: [isu]) is a commune in the Yvelines department, administrative region of Île-de-France, France.

Gargenville (French pronunciation: [ɡaʁʒɑ̃vil]) is a commune in the Yvelines department in the Île-de-France region in north-central France, 45 km to the center of Paris. It is part of the Parc naturel régional du Vexin français. With the neighborhing commune of Issou, it forms an urban area of around 10000 inhabitants. Inhabitants are known in French as the Gargenvillois.

Nézel (French pronunciation: [nezɛl]) is the commune in the Yvelines department in the Île-de-France region in north-central France.

The canton of Aubergenville (French: Canton d'Aubergenville) is an administrative division of the Yvelines department, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Aubergenville.It consists of the following communes:

The Communauté urbaine Grand Paris Seine et Oise is the communauté urbaine, an intercommunal structure, covering the western suburbs of Paris. It is located in the Yvelines department, in the Île-de-France region, northern France. It was created in January 2016 by the merger of the previous communautés d'agglomération Mantes-en-Yvelines, Deux Rives de la Seine, Poissy-Achères-Conflans-Sainte-Honorine, Seine & Vexin and the communautés de communes Coteaux du Vexin and Seine-Mauldre. Its area is 504.7 km2. Its population was 417,556 in 2018. Its seat is in Aubergenville.

Aulnay-sur-Mauldre (French pronunciation: [o(l)nɛ syʁ moldʁ]) is a commune in the Yvelines department in north-central France.

Jumeauville (French pronunciation: [ʒymovil]) is a commune in the Yvelines department in the Île-de-France region in north-central France.

Juziers (French pronunciation: [ʒyzje]) is a commune in the Yvelines department in the Île-de-France region in north-central France.