This framework agreement concerns the analysis of water (wastewater, rainwater, drinking water) and sediments of the structures, natural environments and buildings of Saint-Quentin-En-Yvelines and the rendering of the associated interpretation reports. The territory has the particularity of being the result of the construction of a new town and therefore includes about fifty retention basins. The sewerage networks are entirely separative, except for the collection basin of the Villepreux-Val de Gally wastewater treatment plant, which is mainly unitary. The buildings of the agglomeration community likely to be analysed are those providing drinking water (Town Hall, Residence for the Elderly, etc.) and those dedicated to sports or recreational activities (Clayes-Sous-Bois swimming pool)

This framework agreement concerns the analysis of water (wastewater, rainwater, drinking water) and sediments of the structures, natural environments and buildings of Saint-Quentin-En-Yvelines and the rendering of the associated interpretation reports. The territory has the particularity of being the result of the construction of a new town and therefore includes about fifty retention basins. The sewerage networks are entirely separative, except for the collection basin of the Villepreux-Val de Gally wastewater treatment plant, which is mainly unitary. The buildings of the agglomeration community likely to be analysed are those providing drinking water (Town Hall, Residence for the Elderly, etc.) and those dedicated to sports or recreational activities (Clayes-Sous-Bois swimming pool)