Data centers projected to account for up to 9% of Texas water use by 2040, UT Austin report finds

What Happened

A University of Texas at Austin report projects that data centers could account for up to 9% of Texas's total water consumption by 2040, driven by expanding AI compute infrastructure. The estimate is among the more specific resource-use projections to come from academic research on AI's physical footprint. The available summary does not include current baseline consumption figures against which the 9% ceiling is measured, nor does it specify the cooling-technology and load-growth assumptions underpinning the range.

Why It Matters

Water is now a siting constraint alongside power, land, and interconnection queue position. A 9% share would place data centers among the largest single-sector water users in a state managing chronic drought pressure, converting an operational input into a political variable. Academic projections of this type tend to precede state-level regulatory frameworks covering siting, permitting, and utility agreements. Texas's deregulated energy market — the same feature that attracted hyperscaler investment — offers no equivalent shield on water, which remains governed by a patchwork of groundwater conservation districts, municipal utilities, and surface-water rights. Operators whose cooling strategies assume unconstrained municipal or aquifer access are implicitly pricing a regulatory risk that is not yet on their balance sheets, and the implication is that disclosure requirements and consumption caps move from speculative to plausible within standard facility planning horizons.

Technical Details

Water consumption in data centers concentrates in evaporative cooling: cooling towers reject heat by evaporating water, consuming roughly 1.8–2.0 liters per kWh of IT load in open-loop configurations, with facility-level water usage effectiveness (WUE) typically ranging from 1.2 to 2.5 L/kWh depending on climate and design. Texas's high wet-bulb temperatures reduce the efficiency of air-side economization, pushing facilities toward evaporative and hybrid cooling precisely where water stress is greatest. Closed-loop and liquid-cooling architectures — direct-to-chip, immersion, and rear-door heat exchangers — cut or eliminate evaporative losses but shift the constraint to power density, capital cost, and in some cases facility redesign. The 9% projection depends on assumptions about PUE, WUE, and the growth rate of AI training and inference load, none of which are fixed; small changes in cooling technology mix move the number materially.

Operational Impact

For builders planning Texas deployments, water availability becomes a permitting input rather than a utility line item. Facilities relying on evaporative cooling should model municipal allocation limits, aquifer sustainability rules, and potential reporting requirements into financial projections, since retrofit to closed-loop or liquid cooling after commissioning is capital-intensive and disruptive to operations. Site selection shifts toward regions with surplus water rights or reclaimed-water infrastructure — already a factor in Arizona and parts of Virginia — and contracts with municipal utilities may begin to include consumption ceilings or tiered pricing tied to WUE thresholds. Teams that can credibly commit to low-WUE designs gain negotiating leverage in both utility agreements and local permitting. The working assumption that water is cheap and effectively unconstrained in Texas no longer holds across a 10–15 year depreciation cycle.