Water is the real price of lithium.
Conventional evaporation ponds pull hundreds of thousands of gallons from some of the driest basins on the planet. It's time extraction technology answered for that.
That's not a shortfall. That's the whole system — before a single evaporation pond is built.
The salars are not empty ground.
The high-altitude salt flats of the Lithium Triangle look, from the air, like blank white basins — flat, dry, unpopulated. They aren't. Each salar sits inside a closed hydrological system, where freshwater arrives slowly as seasonal snowmelt and sparse rainfall, and has nowhere to drain out except upward, through evaporation. That water feeds wetlands, supports high-altitude wildlife, and has sustained Indigenous communities in the Andes for generations.
These basins operate on a freshwater budget most people would find hard to believe. Water scarcity here isn't a future risk — it's the current baseline condition. The question is whether extraction methods are designed with that baseline in mind, or whether they were designed for a version of the hydrology that turned out to be wrong.
This is what the industry calls standard practice.
Pump brine. Spread it across open ponds. Wait months for the sun to do the rest. It's cheap, it's proven, and it was built for basins that turned out to have far less water than anyone accounted for.
Standard hydrological models have likely overestimated freshwater availability across the Lithium Triangle by at least an order of magnitude.
2025 basin-hydrology studyShould be classified as critically water-scarce — before current and projected mining demand is even factored in.
Same study, basin-level analysisWater evaporated per ton of lithium carbonate produced via conventional pond extraction in the high Andes.
Yale Environment 360Underground water pumped continuously at the Fenix project, Salar del Hombre Muerto, to feed evaporation ponds.
Yale Environment 360Reported water use for evaporation-pond lithium in parts of South America, depending on site and process design.
MongabayEvaporation-based extraction in Chile's Atacama drains already scarce water resources and damages nearby wetlands.
NRDCMore than half the world's lithium. Almost none of the water it assumes.
Chile, Argentina, and Bolivia share a stretch of high-altitude desert that holds more lithium than anywhere else on Earth — and a hydrology so fragile that a handful of basins, Salar de Atacama, Salar de Olaroz, Salar del Hombre Muerto, now define the water future of the entire industry.
This isn't a story about one mine. In Atacama, evaporation-based extraction has been widely reported to draw down already-scarce water resources, with documented effects on nearby wetlands and the communities that depend on them. It's a preview of what happens everywhere conventional extraction meets a basin that can't keep up.
3
Countries sharing the basin systems>50%
Of global lithium resources28
Basins studied in 2025 researchWater was never a footnote. It's the constraint the next era of lithium has to be built around.
Water risk in critical minerals doesn't stop at evaporation — withdrawal, groundwater drawdown, salinity disruption, and contamination all compound inside the same water-limited basins. That makes extraction method a strategic question, not an environmental one bolted on afterward.
As lithium demand accelerates, the basins it comes from are becoming the limiting factor — not just an externality to manage, but the thing that decides what can be produced at all. That's the premise NexGen DLE is built on.
Lithium's next era runs on less water. See what that actually looks like.
The water case against conventional evaporation ponds is not subtle. What comes next is the part worth paying attention to.
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