Data Center Water Usage vs Agriculture: Sourced Numbers

U.S. agriculture withdraws far more water than data centers use nationally. The ratio runs roughly 2,280 to 1 against direct, on-site data center cooling. At Ban the Bots, we track how AI's data center build-out affects the communities living next to it. While commercial farms withdraw trillions of gallons of water annually to grow food, data center water demand increases roughly 20% each year and competes directly for treated municipal drinking supplies in arid counties. Evaluating data center water usage vs agriculture requires separating national volumetric totals from local utility capacity.

The Short Answer

Agricultural crop irrigation in the conterminous United States (CONUS) withdraws more water in four hours than all domestic data centers consume directly on-site in an entire year. Model estimates from the U.S. Geological Survey (USGS) in Professional Paper 1894-D show that crop irrigation withdrawals across the conterminous United States averaged 108,723 million gallons per day (Mgal/d) during water year 2020. By comparison, research published in December 2024 by the Lawrence Berkeley National Laboratory (LBNL) calculated that U.S. data centers consumed approximately 17.4 billion gallons of water directly on-site in 2023 for facility cooling.

Converting the daily federal irrigation figure across a standard 365-day year yields approximately 39.7 trillion gallons of water withdrawn annually for crops. That annualization represents an arithmetic conversion of the USGS daily model estimate, rather than an annual total published directly by the agency. Comparing that 39.7 trillion gallon withdrawal figure against the 17.4 billion gallons consumed on-site by data centers shows that farming withdraws approximately 2,280 gallons for every single gallon drawn on-site by computing facilities. Consumptive agricultural water use, which represents water that evaporates or transpires without returning to local aquifers, was modeled by USGS at 78,400 Mgal/d, or roughly 28.6 trillion gallons per year.

Even when incorporating the indirect water required by thermoelectric power plants to generate the electricity data centers draw from the electrical grid, agriculture still withdraws vastly more water. Lawrence Berkeley National Laboratory estimated that accounting for power-generation cooling brings total data center water demand to approximately 228 billion gallons per year. That broader accounting narrows the ratio to roughly 174 to 1 for agricultural withdrawals, and roughly 125 to 1 for agricultural consumptive use. As we documented in our sibling analysis of data centers vs golf courses water usage, golf courses apply roughly 531 billion gallons annually. Agriculture dwarfs both industries, yet national comparisons obscure severe local water challenges.

Data Center Water Usage vs Agriculture: The Numbers

The raw physical volume of agricultural water withdrawal exceeds data center water consumption across every published metric, but the two sectors differ in water quality, consumptive loss rates, and growth trajectory. The following table contrasts both sectors using federal research data.

Physical distinctions between withdrawals and consumptive use matter for interpreting these numbers accurately. When agricultural operations withdraw water, much of it percolates back through soil layers into shallow aquifers or returns to river systems through irrigation runoff. The USGS estimated that consumptive use accounts for roughly 72% of total irrigation withdrawals nationwide. In contrast, data centers operating evaporative cooling towers turn almost all of their on-site water intake into atmospheric vapor to remove heat from computer server racks.

The source of the water creates an even sharper division between these sectors. Commercial farming relies heavily on dedicated irrigation canals, regional water project diversions, and private agricultural wells drilled into rural aquifers. Data centers typically draw purified water directly from municipal utility pipes. This means computing facilities depend on the identical treated drinking water systems that supply residential homes and local businesses.

Why Agriculture Water Use Dwarfs Data Centers

Agricultural water use operates on an immense physical scale because sustaining food supplies across hundreds of millions of cultivated acres demands continuous volumetric water movement. Feeding hundreds of millions of people and producing grain, forage, and produce for domestic consumption and export requires irrigating vast geographic expanses. The USGS Professional Paper 1894-D report established that crop irrigation represents one of the largest single categories of freshwater withdrawal in the nation. The physical volume required to keep crops alive under summer heat across the Great Plains and western valleys inevitably results in numbers measured in trillions of gallons.

Data centers, by comparison, are industrial buildings packed with silicon chips, circuit boards, and electrical power distribution gear. They use water specifically to prevent computer servers from overheating while executing machine learning calculations, hosting websites, and routing internet traffic. While a large data center campus can consume several million gallons of water every day during hot summer periods, there are only several thousand commercial data facilities in the entire country. The absolute physical footprint of computing facilities remains tiny when placed alongside American farmland.

However, comparing a mature food production system to a rapidly expanding digital infrastructure industry overlooks the issue of growth velocity. Agricultural acreage and irrigation methods have stabilized over recent decades, with water usage remaining generally flat as farmers adopt precision nozzles and soil sensors. Data centers are expanding at a rapid pace. Research from LBNL indicates that data center water use is increasing by roughly 20% per year, pushed upward by the rapid rollout of artificial intelligence (AI) clusters. Projections backed by the Environmental Protection Agency (EPA) estimate that direct data center water consumption will rise to between 38 and 73 billion gallons annually by 2028. That represents a potential quadrupling of direct water consumption in five years.

One Crop Up Close: Almonds

Individual high-value agricultural crops demonstrate how irrigation water accumulates into large aggregate volumes through plant transpiration and field evaporation. Almond cultivation provides a clear example of crop water intensity that frequently appears in resource debates. According to research from the Pacific Institute and a 2018 study by Fulton et al. in the journal Ecological Indicators, producing a single almond kernel requires an estimated 1.1 to 3.2 gallons of water. That figure accounts for the full irrigation cycle needed to support mature orchards through hot growing seasons.

We incorporated this almond benchmark into our interactive AI water calculator to help readers conceptualize the water requirements of generative computing queries against everyday physical objects. A complex AI text generation session or image synthesis workflow can consume between a fraction of a cup and several cups of water when accounting for cooling tower evaporation and grid power generation.

This single-crop metric illustrates why agricultural totals scale so rapidly into billions and trillions of gallons. Orchards contain millions of individual trees that must be irrigated across entire seasons to keep root structures healthy and produce marketable harvests. Data centers do not require water to build organic plant matter or sustain biological life. Computing facilities consume water strictly as a heat-transfer mechanism to vent thermal energy away from processors. The two activities accomplish completely different societal objectives and draw from entirely different points of the hydrologic cycle.

Where Irrigation Water Goes in the United States

Irrigation demand across the United States concentrates heavily in specific hydrologic basins where arid climates require supplemental water to maintain crop production. In USGS Professional Paper 1894-D, researchers analyzed daily withdrawal patterns across every major hydrologic region in the conterminous United States over an eleven-year span. Their modeling showed that water use for farming is not distributed evenly across the landscape, but clusters within specific river basins and alluvial valleys.

The California-Nevada hydrologic region registered the largest single-region irrigation water volume in the entire federal study. During July, which the USGS report identified as the annual peak irrigation month, withdrawals in the California-Nevada region alone reached 61,328 Mgal/d. That 61,328 Mgal/d figure represents a single peak summer month in one region, rather than a nationwide or annual average. It reflects the intensive irrigation required to sustain fruit, vegetable, nut, and forage production in the Central Valley during peak summer heat.

The federal report also singled out two other prominent agricultural regions as being among the most water-intensive irrigation territories in the country: the Mississippi Embayment and the Central and Southern High Plains. In the Mississippi Embayment, extensive crop watering supports rice, cotton, and soybean fields. In the Central and Southern High Plains, irrigators draw heavily from regional groundwater stores to water corn, wheat, and cattle feed. These specific regions account for the vast majority of the nation's 108,723 Mgal/d crop withdrawal volume.

Why the Data Center Water Use vs Farming Comparison Fails Locally

Comparing national industry water aggregates fails to protect local communities because data centers draw from drinking water distribution systems while farms draw from raw irrigation networks. When technology trade associations argue that data centers use only a tiny fraction of the water devoted to agriculture, they present a mathematically accurate national figure that conceals acute municipal stress. That macro ratio does not help a town whose local water utility has committed its surplus treatment capacity to a newly constructed hyperscale computing campus.

Three practical operational realities explain why comparing national data center water demand to agricultural water use breaks down at the community level:

• Treated municipal drinking water vs untreated field supplies. Farms use raw river diversions, open canal gravity flows, and agricultural wells that bypass water treatment facilities entirely. Modern data centers require treated municipal water that meets potable drinking water standards. Cooling tower heat exchangers scale quickly if water contains high mineral deposits, prompting operators to draw from the same municipal supplies that serve local kitchen taps.
• Extreme geographic clustering. While farming spans tens of millions of acres across dozens of states, data centers cluster tightly together in specific counties to access fiber optic junctions and electric utility substations. Roughly 40% of domestic data centers operate in areas already facing high or extreme water stress. Our guide to data centers vs golf courses water usage documents concrete local cases where that concentrated demand lands directly on regional utilities.
• Direct competition for land and water utility rights. In many developing tech corridors, technology companies purchase agricultural parcels specifically to convert them into server campuses. As detailed in our report on data centers built on farmland, this transition changes how water is used in the area. Instead of raw irrigation water recharging local shallow soils, treated water is evaporated permanently into the atmosphere through mechanical cooling equipment.

When computing facilities move into semi-arid environments, they can compete directly with agricultural users for regional groundwater allocations. If a municipal utility agrees to supply millions of gallons daily to a computing campus, regional water managers must balance that new, non-negotiable contract against agricultural pumping limits. For communities examining these utility commitments, our guide on how to stop a data center outlines the local zoning and utility approval processes where water allocations are officially decided. Understanding the broader energy requirements that drive this cooling demand is detailed in our guide to how much water AI uses.

Verdict: How to Evaluate Data Center Water Usage Compared to Agriculture

National agricultural water totals prove that farming consumes the overwhelming majority of American water withdrawals, but this macro ratio does not absolve data centers of their localized strain on municipal utilities. The agricultural comparison is frequently cited by corporate infrastructure developers to dismiss water concerns as minor. While agriculture withdraws roughly 2,280 times more water nationally than data centers consume directly on-site, the comparison sets up a false equivalence between growing food across an entire continent and cooling server racks inside dense industrial corridors.

This analysis is not for agricultural planners seeking crop yield optimization or farm water allocations, who should consult state agricultural extension services. What would change our answer is a wholesale shift in data center cooling technology toward closed-loop air cooling or dry heat rejection systems that eliminate evaporative water loss entirely. Until that transition occurs across the technology sector, high-density computing will continue to pull large volumes of drinking water from local municipal supplies.

A national comparison between farming and computing tells a municipal water board nothing about whether their local reservoir can support a new server park. Local utility capacity, regional drought severity, and peak summer pumping contracts are the only figures that matter to community residents.

Search your county on our data center map to evaluate local facility permits against your regional water supply before accepting broad claims about data center water usage vs agriculture.

Frequently Asked Questions

Does agriculture use more water than data centers?

Yes, by an enormous margin on a national scale. Agricultural crop irrigation in the conterminous United States withdraws approximately 108,723 million gallons of water per day according to federal modeling from the U.S. Geological Survey, which annualizes to roughly 39.7 trillion gallons per year. U.S. data centers consumed approximately 17.4 billion gallons of water directly on-site in 2023 for cooling, meaning farming withdraws more water in four hours than all domestic data centers consume on-site all year.

How much water does U.S. agriculture use compared to data centers?

U.S. crop agriculture withdraws roughly 2,280 times more water than data centers consume directly on-site, based on an annualized agricultural withdrawal figure of roughly 39.7 trillion gallons compared to 17.4 billion gallons of direct data center cooling water. Even when adding the indirect water used by power plants to generate data centers' electricity (bringing data centers to about 228 billion gallons), agriculture still withdraws approximately 174 times more water than the computing sector uses across its combined power and cooling footprint.

How much water does it take to grow an almond?

Growing a single almond requires an estimated 1.1 to 3.2 gallons of water, according to research from the Pacific Institute and a 2018 study by Fulton et al. in the journal Ecological Indicators. This figure reflects the full seasonal irrigation required to sustain almond orchards in arid agricultural regions like California's Central Valley, where tree crops require consistent water applications over many months to produce a harvest.

Is comparing data centers to agriculture's water use misleading, the same way the golf-course comparison is?

Yes, comparing data centers to agriculture is misleading because it uses a national aggregate to downplay localized municipal impacts. Agriculture moves vast quantities of untreated surface and groundwater across rural basins to grow food for the nation. Data centers draw treated, drinking-quality water directly from municipal systems, cluster heavily in drought-prone regions where 40% face high water stress, and are growing their water demand by roughly 20% each year while agricultural water use remains largely flat.

Which uses more water, data centers or farming?

Farming uses vastly more water than data centers overall. Total annual crop irrigation withdrawals across the conterminous United States reach roughly 39.7 trillion gallons, with consumptive use accounting for about 28.6 trillion gallons. Data centers use roughly 17.4 billion gallons directly on-site, or roughly 228 billion gallons when including indirect power-plant cooling. However, farming and data centers rely on different water supplies; data centers compete directly with households for treated municipal tap water in specific local markets.

Sources

• USGS Professional Paper 1894-D: Water Use Across the Conterminous United States, Water Years 2010 to 20
• Lawrence Berkeley National Laboratory (LBNL): U.S. Data Center Energy and Water Use Report
• U.S. Geological Survey (USGS) Parent Agency
• U.S. Environmental Protection Agency (EPA)
• Pacific Institute