Natural sulphate contamination in the multi aquifer system in Santiago del Estero city, Argentine

Abstract

The study observed a complex of figures and graphics that reveal the progressive pollution in the pumping wells. Also, it is made a detailed and current review of the underground physics - chemistry evolution, which results justify the importance of finding a real solution to the degradation’s problem of the aquifers in Santiago del Estero. For that reason, it is strictly necessary to build a total of eleven wells in the recharge’s zone, so five of them will be diggings 70 m in the gravel wedge (aquifer II) and six wells of 150 m of depth in the margins of the river Dulce. On the other hand, the studies carried out in the area indicate that all the wells will obtain water directly from the river to a direct recharge, so 81% of its flow will be absorb from the river and the rest, 19% would be taken from the aquifer. This reason will avoid the progressive advance of the saline wedge and there won’t harm the chemica1 quality of the recharge area. The batteries of the wells will supply 1.500.000 L/hour to the interconnected system on the top most potable conditions.