Activities on the vast surface areas of the airport platform produce potentially polluting surface water. The airport also uses drinking and industrial water, discharged in the form of wastewater. Bordeaux Airport monitors these issues closely, so as to manage its resources in a balanced fashion.
The airport has five "drainage basins" feeding into different streams around the platform: the two arms of the Devèze to the east, the Magudas stream to the north, the Hestigeac stream to the northwest and the Craste du Cerne to the west.
The Law on Water is the key regulatory text for airports and is applied locally in this field through orders from the authorities subsequent to hydraulic studies, evaluations of the environmental impact of runoff, and a public survey. For each point of discharge into the natural environment, they define the quantitative and qualitative parameters with which the airport must comply strictly.
In view of this, the airport created a storm water runoff treatment plant on the southern arm of the Devèze, which began operating at the end of 2015, in accordance with the dictates of the Prefectural order regarding basin number 3.
A borehole, renewed in 2015, and water tower provide the airport with drinking water, with back-up supply from the municipal mains network. Only the freight area is exclusively connected to the mains supply.
This water is treated with chlorine and quality is regularly monitored by an approved laboratory and by the Regional Health Agency (ARS).
All of the airport's wastewater is collected separately from storm water. It passes through lift stations before joining the municipal sewerage network, as part of a wastewater agreement, to be treated at the Cantinolle treatment plant in Eysines.
As is the case for drinking water, an approved laboratory takes qualitative measurements of wastewater.