The Grand Auch Coeur de Gascogne agglomeration community is responsible for collective sanitation and the treatment of wastewater (Eu) and rainwater (Ep). The collective sewerage network serves 21,943 inhabitants, i.e. 11,892 subscribers. The mission will focus on assessing the location and quantity of parasitic and seepage water transited through the sewerage network of the municipality of Auch. To do this, field investigations (measurements of high-water and low-water flows, in rainy and dry weather, branch surveys) will be necessary

The Grand Auch Coeur de Gascogne agglomeration community is responsible for collective sanitation and the treatment of wastewater (Eu) and rainwater (Ep). The collective sewerage network serves 21,943 inhabitants, i.e. 11,892 subscribers. The mission will focus on assessing the location and quantity of parasitic and seepage water transited through the sewerage network of the municipality of Auch. To do this, field investigations (measurements of high-water and low-water flows, in rainy and dry weather, branch surveys) will be necessary