The State of Water on Earth
Water covers approximately 71 percent of the Earth's surface. That abundance is an illusion. The overwhelming majority of it is saltwater, and of the small fraction that is fresh, most is locked in glaciers, ice caps, or deep underground. What is actually accessible and safe to drink is a vanishingly thin margin of what exists on this planet.
of Earth's surface is covered by water, but 97.4% of that is saltwater in the oceans.
Source: National Geographicof all water on Earth is freshwater. Of that, roughly two-thirds is frozen in glaciers and ice caps and unavailable for use.
Source: World Wildlife Fundof all water on Earth is useable, accessible, and safe for human consumption, according to the United Nations.
Source: United Nations ClimateOf all the water on Earth, less than one half of one percent is available for the roughly 8.2 billion people alive today. Every farm, every city, every factory, every hospital, and now every data center draws from that same finite source.
Renewable freshwater availability per person has declined by 7 percent over the past decade alone, according to the 2025 AQUASTAT Water Data Snapshot from the United Nations Food and Agriculture Organization. Global freshwater demand has been growing at nearly 1 percent per year since the 1980s, driven by population growth, agriculture, industrialization, and now, the rapid expansion of digital infrastructure.
How Humans Use Water
Fresh water is not distributed or consumed equally. Agriculture dominates global freshwater use, followed by industry, with domestic and household use representing the smallest share. The average American uses approximately 80 to 100 gallons of water per day at home, but that number excludes the water embedded in the food, clothing, and products they consume.
| Sector | Share of Global Freshwater Withdrawals | Context |
|---|---|---|
| Agriculture | ~70% | Irrigation for crops; estimated 60% of this is lost to inefficient systems |
| Industry | ~20% | Manufacturing, energy production, and cooling systems |
| Domestic / Municipal | ~10-12% | Drinking, sanitation, cooking, and household use |
| Data Centers | Growing rapidly | Cooling for servers; now ranked in the top 10 most water-consuming U.S. industries |
Source: UN World Water Development Report 2024; Environmental and Energy Study Institute
Global freshwater use has increased approximately six-fold since 1900. Roughly half of the world's population currently experiences severe water scarcity for at least part of the year. By 2030, an estimated 4 billion people will live in areas of high water stress, according to global water monitoring data.
Where the Water Crisis Is Worst
Water scarcity is not evenly distributed. Some regions face absolute physical scarcity, meaning there is simply not enough water to meet demand. Others face economic scarcity, meaning water exists but infrastructure to access and distribute it is absent or broken. Both forms of scarcity are worsening.
| Region / Country | Water Status |
|---|---|
| Middle East and North Africa | 19 of 22 states are below the water scarcity threshold; among the most water-stressed regions on Earth |
| India | 18% of the global population but only 4% of the planet's freshwater resources |
| Sub-Saharan Africa | Limited irrigation infrastructure; millions rely on unsafe water sources |
| Pakistan | Per capita water availability has dropped from 5,000 m³ in 1950 to under 1,000 m³ today |
| U.S. Southwest (Arizona, California) | Significant and worsening water stress; major aquifer depletion underway |
| Mexico City | Faces periodic shortages and rationing; groundwater aquifer critically overdrawn |
Cities at serious risk of running out of drinking water, according to Britannica and the BBC, include Sao Paulo, Bengaluru, Moscow, Jakarta, Beijing, Cairo, Tokyo, Miami, London, Istanbul, and Mexico City. As of 2024, 4.4 billion people lack access to safely managed drinking water, and 2 billion live entirely without safe water access, according to global water monitoring data.
Before the fall of 2022, the global expansion of AI infrastructure was not yet a significant factor in water stress calculations. The public release of generative AI tools beginning in late 2022 triggered rapid, large-scale data center expansion worldwide. Regions that were already approaching their water resource limits are now being asked to support facilities consuming millions of gallons per day.
What AI Costs in Water
Data centers require enormous volumes of water for one primary purpose: cooling. Server chips generate intense heat during computation, and the most common method of managing that heat involves evaporative cooling systems that consume and evaporate water continuously. Approximately 80 percent of the water drawn by a data center is lost to evaporation and cannot be recovered or reused.
The cost of a single AI prompt
Each 100-word AI prompt uses approximately 519 milliliters of water, roughly one standard water bottle, according to research from the University of California, Riverside. A January 2026 analysis found that 30 minutes of AI usage requires slightly more than 0.16 gallons. With billions of prompts processed globally every day, the cumulative consumption is staggering.
gallons of water per day consumed by a single large data center, equivalent to the daily needs of a city of 50,000 people.
Source: Brookings Institution, November 2025gallons of water used by Google data centers in 2023 alone. Its thirstiest single facility in Iowa consumed 2.7 million gallons per day in 2024.
Source: Google 2024 Environmental Reportliters: the high-end estimate for the total water footprint of AI systems globally in 2025, roughly equivalent to the world's annual consumption of bottled water.
Source: ScienceDirect / Cell Reports Sustainability, 2025Training GPT-3 alone is estimated to have evaporated approximately 700,000 liters of freshwater. A study by the Houston Advanced Research Center found that data centers in Texas will use 49 billion gallons of water in 2025, potentially rising to 399 billion gallons by 2030, enough to draw down Lake Mead, the largest reservoir in the United States, by more than 16 feet in a single year.
AI data centers consume 10 to 50 times more cooling water than traditional server facilities. As AI workloads increase chip density and heat generation, water demands intensify further. In Newton County, Georgia, proposed data centers have reportedly requested more water per day than the entire county uses. Local officials are now weighing whether to accept those requests or impose water rationing on residents.
| Company | Reported Water Use | Commitment |
|---|---|---|
| 6.1 billion gallons in 2023; Iowa facility used 2.7M gallons/day in 2024 | Water positive by 2030; 120% replenishment goal | |
| Microsoft | Water intensity reduced 80% since early 2000s; new designs use zero water for cooling | Water positive by 2030; zero-water evaporation in new facilities by 2027 |
| Amazon (AWS) | Reporting is less granular than peers | Water positive by 2030 |
| Meta | Published in 2024 Sustainability Report; uses recirculation and reuse strategies | Sustainability goals published; water-positive commitments in development |
Note: As of early 2026, only 51% of data center operators track their water usage at all. Only 10% track across all facilities. Standardized reporting does not yet exist. Source: Environmental and Energy Study Institute
Sustainability Standards: What Exists Today
There is currently no binding federal regulation in the United States requiring data centers to limit or report their water consumption. What exists is a patchwork of voluntary commitments, emerging state-level rules, and nascent international standards.
| Standard or Regulation | Status | Scope |
|---|---|---|
| ISO/IEC International Standard on Sustainable AI | Adopted; first international standard to include water footprint as a key metric | Voluntary; global |
| Water Usage Effectiveness (WUE) | Established metric by The Green Grid; measures liters consumed per kilowatt-hour | Voluntary; industry benchmark |
| EU Data Center Sustainability Reporting | In effect; requires reporting of water consumption metrics | Mandatory for EU-based facilities |
| Arizona Assured Water Supply Program | In effect; large developments must demonstrate long-term water availability | State-level; applies to data centers |
| Tucson, Arizona Municipal Ordinance | In effect; large users must submit water conservation plans and obtain city approval | Municipal; applies to data centers consuming millions of gallons annually |
| SEC Climate Disclosure Rules | Evolving; require reporting of material water risks | U.S. publicly traded companies |
Google, Microsoft, and Amazon have each announced commitments to become water positive by 2030, meaning they have pledged to return more water to the environment than they consume. Critics note that replenishment projects may not address localized supply constraints during droughts, and that corporate water reporting remains far less standardized and verified than energy or carbon disclosures.
What We Should Be Concerned About
Human Use of Water
- Renewable freshwater availability per person has dropped 7% over the past decade and continues to decline
- Over 2 billion people currently lack access to safe drinking water; 4.4 billion lack safely managed water services
- By 2030, an estimated 4 billion people will live in areas of high water stress
- Agriculture wastes an estimated 60% of the water it withdraws through inefficient irrigation
- Glaciers and snowpacks supplying freshwater to hundreds of millions are melting at accelerating rates
- Water-related disasters and droughts are increasing in frequency and severity due to climate change
- Groundwater aquifers being drawn down faster than they can replenish, permanently reducing future availability
- Water contamination from industrial, agricultural, and pharmaceutical pollution is closing off sources that were once usable
- Water scarcity is already driving migration and conflict; this is projected to intensify significantly by 2050
AI Use of Water
- AI data centers consume 10 to 50 times more water than traditional server facilities, and demand is growing rapidly
- Data centers are being disproportionately located in arid, water-stressed regions where land and energy are cheaper
- Approximately 80% of water drawn by data centers is evaporated and permanently lost, not discharged for treatment and reuse
- There are no binding federal standards in the U.S. requiring data centers to limit water consumption
- Only 51% of data center operators track their water use; only 10% track across all facilities
- Corporate water positive pledges are voluntary, self-reported, and difficult to verify at the local level
- Communities near large data centers are being asked to compete with them for water during droughts and heat waves
- Training large AI models requires enormous one-time water expenditure that is not offset by efficiency improvements in deployment
- As AI workloads grow and chip density increases, water demands will continue to rise without mandatory efficiency standards
- There is no standardized, publicly accessible reporting framework for AI-specific water consumption
The convergence of a shrinking global freshwater supply and rapidly growing AI water demand is not a distant future scenario. It is happening now. The policy frameworks needed to manage this intersection do not yet exist. Building them is part of what this initiative exists to do.