Climate change is affecting grapevine development by reducing grape yields and quality. Vine watering therefore becomes essential for the wine producing regions. Meeting this increasing demand is generating tensions in terms of water distribution.
With an annual water balance deficit since 2000, the coastal vineyards of the Narbonnais region are subject to a significant lack of water, especially in summer. This deficit has significant consequences both on the quality of the harvest and on the yield of the vineyards.
The Irri-Alt’Eau project was launched to treat and use waste water to be used for this type of agriculture.
Tags: Waste water, climate change, vine, agriculture, Narbonne
Project type Waste water use in agriculture
Partnership Greater Narbonne, AQUADOC, Véolia, INRAE and Cave de Gruissan
Funding 1 572 000 €
The Irri-Alt’Eau project has set another treatment in the Narbonne Plage water treatment plant, in addition to the classic treatment that was already working. It includes two different steps, chlorination and UV irradiation, to eliminate microbiological pathogens, bacteria or viruses presenting risks of contamination for the environment, human, animal and plant health. This tertiary treatment is rigorously monitored by the Regional Health Agency, which carries out the tracing of dangerous molecules (such as those present in medicines) in order to verify that their quantity does not exceed the authorized threshold in drinking water. Numerous analyses of the water are thus carried out as soon as it leaves the treatment plant, then at ground level, on the grapes and even in the wine, so that health requirements are strictly respected.
The project has been initially deployed at Gruissan wine domain. Since the results were very positive, it is to be extended to all vineyards in the Greater Narbonne.
Thus, Irri-Alt’Eau 2.0 participates in the agro-ecological transition: the wine of tomorrow will be part of a local recycling process, according to the principles of the circular economy, by cultivating grapes without pesticides and of quality in a sustainable way, by limiting the waste of water resources as well as the production of waste, while taking into account the environmental and social impacts at each stage of production.