This article shows how geo-legal devices created to deal with environmental crisis situations make access to drinking water precarious and contribute to the overexploitation and contamination of water resources. It relies on qualitative methods (interviews, observations, archive work) to identify and analyse two geo-legal devices applied in the case study of the Elqui Valley in Chile. The first device, generated by the Declaration of Water Scarcity, allows private sanitation companies to concentrate water rights and extend their supply network, thus producing an overexploitation of water resources. In the context of mining pollution, the second device is structured around the implementation of the Rural Drinking Water Programme and the distribution of water by tankers, which has made access to drinking water more precarious for the population and does nothing to prevent pollution.

本文展示了为应对环境危机情况而创建的地理法律手段如何使饮用水变得不稳定，并导致水资源的过度开发和污染。它依靠定性方法（采访、观察、档案工作）来识别和分析智利埃尔基山谷案例研究中应用的两种地理法律手段。第一个装置是由《缺水宣言》产生的，它允许私营卫生公司集中水权并扩展其供应网络，从而造成水资源的过度开发。在采矿污染的背景下，第二个装置围绕农村饮用水计划的实施和水罐车的分配，