California grows roughly 80 percent of the world's almonds. The orchards that produce them draw between 4.7 and 5.5 million acre-feet of water every year, according to the California Water Impact Network's 2024 accounting. One acre-foot is about 326,000 gallons. Run the multiplication and a single crop in a single state consumes somewhere near 1.6 trillion gallons of water a year. Every data center in North America, combined, used a fraction of that in 2025.
Count the water generously on the data center side. Add the onsite cooling draw to the offsite water burned at the power plants that feed the racks, the full footprint that critics insist on counting. The total for every facility across the United States, Canada, and Mexico lands somewhere near 250 to 330 billion gallons for 2025, call it 0.8 to 1 million acre-feet. California almonds outdraw that by four to seven times. Strip the comparison down to onsite cooling water alone and the gap widens past sixty to one.
This is the comparison the cooling industry should be putting in front of every regulator, every county commission, and every reporter writing the next data center water story. It is not putting it anywhere. The result is a permitting environment shaped by numbers that are out of proportion to the actual draw.
California grows nearly 100 percent of the United States almond crop, and demand has climbed about 400 percent since 1980. The state planted roughly 1.56 million acres of almonds to meet it, up from 640,000 acres in 2004. Each acre takes 3 to 4 acre-feet of applied water a year. The orchards consume close to the same volume of water as every household in California combined, which ran about 5 million acre-feet in 2020. Estimates of almonds' share of California agricultural water run from about 10 percent to 17 percent depending on the accounting, and agriculture takes roughly 80 percent of the state's developed water supply.
The per-unit figures are the ones that traveled. It takes more than a gallon of water to grow a single almond, and 350 to 680 gallons to grow a pound, depending on which side of the San Joaquin Valley the orchard sits on. The Almond Board reports a 30 to 50 percent improvement in water-use efficiency over four decades. The efficiency gains are real and the aggregate draw is still measured in millions of acre-feet, because the acreage tripled while the technology improved. Roughly 70 percent of the crop ships abroad. California exports the almonds and keeps the water debt.
Water is only the part of the footprint that gets counted. Almonds take more pesticide than any other California crop, with roughly 85 percent of the acreage treated with glyphosate, and the February bloom depends on trucking in most of the commercial honeybee colonies in the United States to pollinate it. The crop's environmental cost is large, documented, and multi-dimensional, and it draws a fraction of the public scrutiny aimed at a server hall with a cooling tower.
Lawrence Berkeley National Laboratory put direct onsite water consumption for United States data centers at about 17 billion gallons in 2023, roughly 46 million gallons a day. The water consumed at the power plants generating the electricity to run those facilities added another 211 billion gallons, about twelve times the onsite figure. Add them and the total United States data center water footprint for 2023 came to roughly 228 billion gallons.
Escalate that for two years of buildout, add Canada and Mexico, and the 2025 total for North America lands somewhere near 250 to 330 billion gallons. That is the generous number. It counts the water-power tradeoff that operators routinely leave out of their own disclosures. Market researchers publish figures several times higher, because the reporting conflates withdrawal with consumption and onsite with offsite, and because almost no operator discloses the actual meter reading. The reporting is contested at the order-of-magnitude level, which is the entire problem.
That problem is the same one Andy Masley documented when he found errors of a thousandfold in the most-cited AI water statistics. The AI water panic is built on bad math, and the bad math runs in one direction. It inflates the data center. Even at the high end of every credible estimate, and even after counting the power-plant water, every data center on the continent draws less than one fifth of what California spends on a single nut.
One California crop uses more water than every data center on the continent, by a multiple, even after you add in the power plants. Onsite, it is not close. Almond orchards outdraw the entire North American data center fleet by more than sixty to one.
During the 2011 to 2017 California drought, almonds became the villain. The one gallon per almond statistic went viral and a high-value export crop took the public blame for a statewide water allocation that it represented a sliver of. Agriculture used about 80 percent of the developed water. Alfalfa and irrigated pasture for cattle used more water than almonds. The visible product absorbed the anger that belonged to a systemic allocation question, because a single nut is easier to picture than an aquifer.
Data centers are now the visible product. They draw far less water than the orchards that took the blame a decade ago, and they are absorbing the same disproportionate scrutiny, for the same reason. A server hall with a cooling tower is easy to picture. The protests in Box Elder County, Utah and the scrutiny of Microsoft's Wyoming water math are downstream of a story that has the scale wrong by a wide margin.
None of this waves off a genuine problem. A drought-stressed county with a stressed aquifer feels an orchard and a hyperscaler the same way, and water drawn from the wrong basin in the wrong year is a real cost regardless of the national total. Data centers cluster. When several large users pull from one constrained source at once, the local draw matters even when the continental number is small. The almond comparison exists to right-size the fight, so that policy lands on the actual draw in the actual basin rather than on a category that has been inflated to crisis scale.
The comparison also exposes how little anyone actually knows. Senator Durbin's data center water transparency bill exists because operators do not report their consumption, and California's governor vetoed a disclosure requirement that would have produced the meter readings. The industry is fighting a water argument without putting its own numbers on the table, while one crop's water debt sits fully documented in a state agency spreadsheet.
The engineering answer to the local constraint already ships. Closed-loop CDUs recirculate the same coolant rather than evaporating municipal water. Dry coolers reject heat with no evaporative loss. Nvidia's reference designs now run warm-water cooling at 45C that eliminates the chiller, which removes a large share of the water draw outright. Amazon and Veolia are cooling with reclaimed water in Mississippi. Seawater cooling takes fresh water out of the equation entirely. Zero-water cooling is in pilot today.
The water draw of a data center is an engineering variable an operator controls. The water draw of an almond orchard is fixed by the tree. That asymmetry is the cooling industry's strongest argument and it is going unmade. The EIA projects data center electricity demand reaching 818 billion kilowatt-hours by 2050, which is the variable that drives the indirect water number up. The response to that is the same one that answers the local water constraint: design out the evaporative loss, disclose the meter, and put the comparison where the public can see it.
The cooling industry is letting a water argument it should win define its permitting future, because it has not stated the comparison in plain numbers. Almonds: 1.6 trillion gallons, one crop, mostly exported, fully documented. Every data center in North America: a fraction of that, powering the compute the entire economy is being rebuilt around, and getting blamed for a water crisis it is four to seven times too small to be causing.
State the number. Then build the zero-water systems anyway, because the local constraints are real and precision is the only thing that survives the regulatory environment the buildout is entering. The almond orchards are not going to apologize for their water. The cooling industry should stop apologizing for a draw it can measure, disclose, and engineer down to nearly zero.
California's almond orchards use roughly 4.7 to 5.5 million acre-feet of water a year, about 1.5 to 1.8 trillion gallons. That is close to the volume of water used by every household in California combined.
Yes. California almonds use roughly 4 to 7 times more water than every data center in North America combined, counting both onsite cooling water and the offsite water used to generate their electricity. Measured against onsite cooling water alone, almonds use 60 to 90 times more.
It takes a little over one gallon of water, about 1.1 gallons, to grow a single almond, and roughly 350 to 680 gallons to grow a pound, depending on the orchard's location in the San Joaquin Valley.
In 2023, United States data centers consumed about 17 billion gallons of water onsite for cooling and another 211 billion gallons at the power plants supplying their electricity. The 2025 North American total, counting both, is an estimated 250 to 330 billion gallons, roughly 0.8 to 1 million acre-feet.
Sources: California Water Impact Network, "California Almond Water Usage, Updated," September 23, 2024; Lawrence Berkeley National Laboratory, "2024 United States Data Center Energy Usage Report"; NPR, "How Almonds Became A Scapegoat For California's Drought," April 16, 2015; Bastyr University, "The Ugly Truth About Almonds"; Reason and SFTW analyses of almond water intensity. Data center 2025 totals are estimates built from the LBNL 2023 baseline escalated for buildout and continental scope; figures vary widely by source because most operators do not disclose consumption.