Green Batteries, Dry Villages

Argentina's "lithium triangle" (with Chile and Bolivia) holds over half the world's lithium reserves, concentrated in high-altitude salt flats (salares) in the Puna de Atacama. Lithium extraction by evaporative brine processing consumes approximately 2 million litres of water per ton of lithium carbonate produced — in one of the driest environments on Earth. CONICET researchers have documented that extraction is depleting the same aquifer systems that sustain indigenous Atacameño and Kolla communities' pastoralism, small-scale agriculture, and drinking water. The Argentine government has positioned lithium as a strategic resource for the global energy transition, while the communities most affected by extraction are those least likely to benefit from electric vehicles or grid-scale battery storage.

Global lithium demand is projected to increase 5–10× by 2040 as EV adoption accelerates. Argentina has become the world's fourth-largest lithium producer and is expanding rapidly — over 40 active exploration projects in Jujuy, Salta, and Catamarca provinces. CONICET hydrologists have documented that in the Salar de Olaroz and Salar del Hombre Muerto, water table levels have declined measurably since extraction began, and downstream freshwater springs that indigenous communities depend on have reduced flow. The fundamental tension is structural: the global clean energy transition requires lithium, lithium extraction requires water, and the water it requires sustains vulnerable communities who have no alternative water source. This is not a case where environmental review can find a compromise — evaporative lithium extraction is inherently water-consumptive in a water-scarce environment.

Environmental impact assessments (EIAs) are required before extraction permits are granted, but CONICET researchers have documented that EIAs use inadequate hydrological models — they assess water extraction at individual project scale without accounting for cumulative extraction from multiple projects drawing on the same aquifer system. Provincial governments (which control mining permits in Argentina's federal system) have financial incentives to approve projects and limited technical capacity to evaluate hydrological claims. Community consultation processes exist but are structurally asymmetric: communities must respond within legally defined timeframes to technical documents produced in Spanish by mining companies, without independent hydrogeological expertise. Direct lithium extraction (DLE) technologies — which could reduce water consumption by 50–80% versus evaporation — are technically promising but commercially unproven at scale and not required by any Argentine regulatory framework.

Independent, cumulative hydrological impact assessment — monitoring the entire aquifer system rather than individual extraction sites — would provide the data foundation for informed decision-making. CONICET researchers have the capacity to conduct this science but lack access to proprietary extraction data held by mining companies. A regulatory framework requiring DLE technology adoption (or equivalent water consumption limits) would create market incentives for the technology transition that voluntary adoption has not produced. Most fundamentally, the communities affected need independent technical capacity to evaluate extraction proposals — currently, the only hydrological expertise available to them is either CONICET researchers operating without mandate or mining company consultants with obvious conflicts of interest.

A hydrology team could design a low-cost, community-operated groundwater monitoring network for a specific Puna salar, using commercially available water level sensors and satellite-linked data transmission, to create independent hydrological data. A policy team could compare lithium extraction regulatory frameworks across Argentina, Chile, and Australia to identify which governance structures most effectively protect water resources while enabling extraction. An engineering team could evaluate the current state of DLE technologies and their applicability to Argentine brine chemistries, modeling the water savings and cost implications of mandating DLE versus conventional evaporation.