Freshwater essential for lithium mining is found in parts of Argentina, Bolivia, and Chile, situated in the world’s “lithium triangle” on the Andean plateau, boasting half of all global lithium reserves.

A recent study in Communications Earth and the Environment revealed that available freshwater for lithium extraction in these regions is significantly lower than previously believed. With global demand for lithium expected to surge by 2040, this poses a challenge as it surpasses the limited annual rainfall supplying water to the dry lithium triangle.

Minimizing freshwater usage in the lithium industry is crucial to prevent disruption in mining activities. Extracting one ton of lithium requires approximately 500,000 gallons of water, which also sustains small indigenous communities and unique wildlife habitats in the region.

Water scarcity affects both the ecosystem and the industry in the lithium triangle, as lithium is a key component in batteries driving the global shift towards clean energy technologies. Despite the projected quadrupling demand for lithium batteries by 2030, delays in mining operations due to resource availability raise concerns about meeting this growing demand.

Freshwater plays a vital role in determining the supply of lithium available for mining in the lithium triangle. Rainfall washes lithium-rich minerals out of rocks, creating lagoons filled with lithium-rich water where mining companies extract the mineral. However, limited weather data and overestimation of freshwater supply in the region pose challenges to sustainable mining.

Research into water and resource availability for lithium mining operations is ongoing, emphasizing the need for a comprehensive understanding of the entire lithium supply chain. Studies in lithium-rich regions worldwide are essential to grasp the environmental and social impacts of lithium extraction.