Three groundwater compounds were analyzed and namely quantity, quality and hydrogeochemical vulnerability. Climate cycle is the main mpact factor. It is admitted increasing of atmospheric precipitations nearly 20-30 % comparted with annual statistical mean. Modelling process has been performed using software ModFlow. Increasing recharge to unconfined aquifers would contribute to depollution of unsaturated zone and consequently to enlarge spectrum of pollutants including agricultural fertilizers, heavy metals and microbiological species. In confined aquifers non-equilibrium system would generate more presence of oxygen and geochemical reactions associated with this strong oxidant (nitrification, more microelements and desalinization).