The United States is investing in a domestic lithium industry to support supply chains for electric vehicles (EVs), battery storage systems, and clean energy technologies. A new study from Northwestern University points to water as a potential constraint on that expansion. The research links proposed lithium activity in the United States to regions already experiencing water stress.
As climate change intensifies drought conditions, competition for water is expected to grow among households, agriculture, industry, and power generation. The study raises questions about whether domestic lithium output can expand without adding pressure to water resources. It frames the issue around operational challenges tied to water availability.
Domestic lithium demand and global supply concentration
Lithium is described as a key critical mineral because it is used in rechargeable batteries for electric vehicles, renewable energy storage systems, consumer electronics, and other advanced technologies. Global supply is reported to originate largely from producing nations including Australia and Chile. Processing and refining capacity is said to be concentrated in China.
To reduce reliance on foreign supply chains and improve resource security, the United States has accelerated efforts to develop its own domestic lithium industry. Exploration and development projects have been reported across the western United States, including areas believed to contain significant lithium resources. The study indicates that geological potential alone may not be sufficient for future production growth.
How lithium extraction uses water
Water demand is identified as a major challenge associated with lithium production. The study states that lithium mining typically requires large volumes of water across the production process regardless of extraction method. It highlights concerns about long-term impacts on regional water supplies, particularly in arid environments where availability is already limited.
For lithium brine operations, companies pump mineral-rich brines from underground reservoirs to the surface. After extraction steps separate lithium from the brine, the remaining fluid is managed or reinjected. In hard-rock operations, the study notes water use for ore processing, material washing, dust suppression, and equipment cooling.
Northwestern analysis of future water supply and demand
Researchers from Northwestern University’s McCormick School of Engineering conducted an analysis of projected water supply and demand across potential mining regions. The work was led by Jennifer Dunn, a sustainability expert who is a professor of chemical and biological engineering and director of the Center for Engineering Sustainability and Resilience. The team combined scientific models to assess future water availability under different climate and economic conditions.
The study incorporated five global climate models, four socioeconomic development scenarios, advanced hydrology simulations, and projected water requirements for lithium mining operations. It also included climate futures spanning wetter, drier, hotter, and more moderate scenarios. Using these projections, the researchers assessed how water resources may change between 2040 and 2060.
The assessment covered one active lithium mine in Nevada and 22 proposed lithium projects across the United States. This approach was used to evaluate how future water availability could affect proposed development plans within different regional watersheds. The analysis focused on whether existing demands could be met under changing conditions.
Proposed projects face shortages in stressed watersheds
The results indicate that many western U.S. watersheds struggled to meet existing water demands across nearly every climate scenario examined. Adding large-scale lithium mining operations would place additional pressure on already stressed systems. The study reports that numerous proposed projects could face significant water shortages as supplies decline and competition from other sectors increases.
Even in more favorable climate projections, water availability remained a major concern in several key lithium-producing areas. The findings suggest constraints on future development may be driven less by subsurface resource availability than by the amount of water available above ground. The study therefore ties project feasibility risk to regional hydrology rather than only geology.
Nevada and California highlighted for highest vulnerability
The analysis identified parts of Nevada and California’s Salton Sea region as among the most vulnerable areas for future development. These regions are described as strategically important for future lithium production and host multiple proposed mining projects. The projects would compete for limited water resources in landscapes experiencing long-term drought conditions and growing water demand.
The study notes that agriculture, municipal water systems, and residential consumption are expected to remain the largest users of water. It also states that lithium mining could still significantly increase overall pressure on local supplies even with those dominant users in place. Concentration of multiple mining projects within the same watersheds was cited as an additional operational challenge.
Climate change implications for critical mineral supply chains
The study describes climate change as an increasingly important factor in critical mineral development planning. It reports that rising temperatures, shifting precipitation patterns, and prolonged droughts are expected to reshape water availability across large portions of the western United States during coming decades. It links these shifts to potential obstacles for meeting production targets.
The research also frames a broader issue for the energy transition: many minerals needed for cleaner technologies require significant amounts of water to produce. It indicates that balancing climate goals with sustainable resource management is likely to become a defining challenge for the critical minerals sector as governments and industries pursue battery mineral supplies.
Potential mitigation through technology efficiency and recycling
Researchers propose strategies aimed at reducing future pressure from water shortages while improving sustainability outcomes for lithium production. One approach highlighted is development of more water-efficient extraction technologies, including advanced Direct Lithium Extraction (DLE) systems designed to reduce overall water consumption compared with traditional methods.
The study also points to improved project planning and more strategic site selection to direct investment toward areas with stronger long-term water security. In addition, it cites expanding lithium recycling infrastructure as a way to reduce reliance on newly mined material by recovering valuable battery metals from end-of-life products.
Water access as a constraint on battery mineral development
The United States treats lithium as a cornerstone of its clean energy economy, supporting electric vehicles, renewable power storage, and advanced defense technologies. The Northwestern analysis emphasizes that access to critical minerals can be tied to access to critical natural resources, especially water. It presents this linkage as relevant as climate pressures intensify and competition for water grows.
The study’s framing connects policymakers’ efforts with operational realities faced by mining companies in regions where hydrologic stress is already present. It states that securing future lithium production depends not only on geology and investment but also on managing water resources sustainably over time.
