AI Datacenter Expansion Threatens Water Security Amid Historic U.S. Drought

Federal drought maps show 517 of 809 planned hyperscale AI datacenters lie in areas that have been in drought over the past year. Google, Meta, Microsoft and Amazon are among the investors.

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Over 60 % of the contiguous United States is in one of four drought levels, the largest spring-time extent on record. Scientists attribute the severity to climate change driven by fossil-fuel emissions.

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U.S. datacenter water use is projected to rise from 17 billion gallons in 2023 to 73 billion gallons by 2028. A large facility can consume up to 5 million gallons per day, the daily use of a town of 50,000 residents. Processing a 100-word AI prompt evaporates about 500 ml of water.

The Guardian

Meta says its Hyperion datacenter in Louisiana will draw water from an agricultural aquifer, not community supplies. Dan Diorio of the Data Center Coalition says operators coordinate with local authorities and fund water-restoration. Albert Cho of Xylem notes datacenters represent 4 % of the projected 30 trillion-gallon AI water demand and are shifting to closed-loop cooling and power. California, Michigan and Iowa legislators are drafting water-reporting rules; New York proposes a moratorium on new datacenters.

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Ranchers say datacenters threaten scarce water. Andrew Coppin, CEO of Ranchbot, notes ranchers are urged to conserve water while a new competitor gains near-unlimited access. Ben Abbott, ecologist at Brigham Young University, warns the Great Salt Lake is “headed for an all-time low.” Local opposition has spurred lawsuits and a Utah referendum.

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One study cites datacenters as 4 % of global AI water demand, while Texas estimates they could use 9 % of the state’s water by 2040. The UN projects AI infrastructure worldwide will need water for the domestic needs of 1.3 billion people by 2030, but sector-level breakdowns are lacking. Detailed site-specific withdrawal data remain limited.

US Datacenter Boom Threatens Water Security Amid Historic Drought

• “The AI industry is sprinting as fast as it can to gain market dominance, and the rest of us have to deal with a great increase in water demand in places already in drought,” — Christopher Dalbom, Tulane University

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• “Ranchers are being told to be conservative with water, to not waste water, and now there’s a new competing interest able to get near unlimited access to water,” — Andrew Coppin, Ranchbot

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• “Datacenters are the most visible element to people but they are only part of the picture” — Albert Cho, Xylem

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• “headed for an all-time low” — Ben Abbott, Brigham Young University

The Guardian

California, Michigan and Iowa are weighing stricter water-reporting or mandatory closed-loop cooling. New York’s moratorium could halt new permits. In Utah, a referendum seeks to overturn the Stratos approval, and Kevin O’Leary has agreed to scale back the project. Ongoing lawsuits and federal water-resource assessments will shape future expansion.

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