After 5½ years of experimentation in the Gironde Département, the MAC Eau European project draws to a close on 31 December 2017!

We wish to thank all of those who helped us to make this project a success: local authorities, water experts, elected representatives, technicians and individuals, as well as all of the project partners. The different measures implemented since the project began a few years ago (distribution of water-saving kits, installation of pressure modulators and rainwater tanks, etc.) are today producing some encouraging results and useful feedback.

The project was officially closed on 31 December 2017. Project partners have put forward new and additional actions further to the results obtained. The analyses will continue in order to enhance expertise in water conservation, identify trends and clarify the results obtained during the life of the project.


Drought, constant population growth and climate change weigh heavily on water resources and their quantitative balance. The Gironde département is faced with the problem of considerable pressure on the deep aquifers, which supply more than 96% of drinking water.  The département is also confronted with a significant and constant influx of new populations (an average of 15,000 inhabitants per year). The annual renewal volume of water tables is lower than the volume consumed each year to supply drinking water. In other words, the water tables are over-exploited. 

Repartition usages

Figure 7

Our daily water consumption accounts for 60% of the volume of drinking water used every year in the Gironde Département. We use our drinking water mainly in the bathroom and toilet.

Network leakage represents the second highest volume of water consumption.

 In view of this and of planning actions already implemented in Gironde, the MAC Eau project put forward several experimental measures based on a modification in use and the management of drinking water consumption, as well as the reduction of losses on the drinking water supply network. The purpose of these measures was to meet European goals for the preservation of water resources by acting on consumption habits and raising awareness about their impact.


The Life + MAC Eau European project was initiated in July 2012 for a duration of 5 ½ years. 50% of funding comes from the European Union, 20% from the Adour-Garonne Water Authority and 10% from the Nouvelle Aquitaine Regional Authority.

The project was the result of a technical partnership between the Gironde Département who coordinates the project, the Joint Authority for the Study and Management of Water Resources in Gironde (SMEGREG), the Mérignac Town Council and the Inter-Municipal Drinking Water Authority of Blaye (SIAEP du Blayais).