SUMMARY
The cartography of the vulnerability in the pollution of subterranean waters allows identifying zones with high risk of contamination who takes into account the major part of the hydrogeological factors which allocate and control the flow of subterranean waters: the depth of the water, the refill. These factors are represented by weights and quotations which depend respectively on their relative importance and on local hydrogeological conditions. The overall of the weights and the quotations of the diverse parameters and in a numerical value which is the indication Drastic. The cartography of the indication of vulnerability bases on the overlapping of 7 indexed cards.