Algeria is influenced by climate change, which is highlighted by an increase in the minimum and maximum average temperatures. A spatiotemporal disruption of rainfall regimes, giving rise to periods of intense and abundant precipitation followed by long drought periods. Within this situation, guaranteeing water to the population and supporting economic development through water solidarity between regions is the main challenge of the country. Based on the official water sources data, an attempt has been carried out to provide a geospatial analysis of sustainable water supply under water stress and climate change. By adopting the water stress indicator (WSI) and the water-use efficiency (WUE), the ratio of total fresh-water withdrawn (TFWW) by all major sectors to total renewable fresh-water resources (TRWR) has been considered for different sectors. As primary results obtained, the water stress indicator exceeds the 80%. On the other hand, an imbalance was noticed in the calculation of the water use efficiency in irrigated agriculture, due to the lack of real statistics about the Proportion of irrigated land on the total cropland. Accordingly, a drought trend is calculated from national statistics, deflated compared to the reference year by using the CWUE formula, whereas the primary results show an early drought trend between 79% and 138%, which is very far from the standard trend (less than 1000 m3/inhabitant/year). Following this attempt, it can be concluded that a national statistical platform should be in place to ensure actual data collection and establish a digital geospatial analysis of sustainable water supply under water stress and climate change.