The short answer — every data center in America, counting their entire power bill: about a third of one percent of the water this country moves in a day. The long answer is worth your time, because I watched it from the inside.
It was 5:30 in the morning. I already had my coffee and was driving to the Facebook Data Center in North Fort Worth. I was an electrical apprentice and I was nervous — but maybe a bit excited for the unknown. I wonder what job they'll put me on?
When I arrived on site I was overwhelmed, to say the least. Huge power lines stretched from a substation in three different directions and vanished into the horizon. Two massive mile-long buildings stood fully erected, each surrounded by what appeared to be bus-sized boxes. Upon getting closer, it was more like four buses. Imagine two buses side by side, then double-stacked high. Huge wires were neatly arranged coming out from the boxes and into the ground — and there was a smoke stack rising from the roof of each one. "These must be the generators," I thought. Countless groups of construction workers performing every task imaginable. People driving machines, welders fusing large steel beams, plumbers and electricians digging ditches and laying down pipes. Golf carts and trucks whizzing by. Cranes looming overhead — floating pallets, boxes, metal beams, and all kinds of other unidentifiable objects. I could see large, flattened, perfectly manicured dirt rectangles where future buildings would stand — six in total, it looked like. Six massive mile-long buildings, each drawing enough power to run a small city.
I needed to find my crew, which I was told was located in Building 3. As I approached, the building towered over me. I could see it was divided into an upper and lower floor. But this was no ordinary two-story building. The bottom floor was at least 30 feet tall and the second floor maybe almost as much. As I entered the building one thing became readily apparent — while the outside shell of the building was mostly intact, the interior had very few walls at the time. I could see clear from one end all the way to the far other side. Four massive rooms. In the center were what looked like large chimneys leading to the floor above. They went from one end of the building to the other — one after another — across the entire center of the building. I found where my crew was stationed and, after a short meeting, I learned that my job was to install fire alarm on the second floor. After gathering my tools and the supplies I needed, I headed up the stairs, where all sense of what I thought a data center was began to crumble.
It was hard to make out exactly what I was seeing. All the walls were made of metal and the doors were unreasonably thick and heavy — like safe vaults. It kinda reminded me of the walk-in freezers at Whataburger, where I used to work. And that's when it hit me: the whole upper floor of this building was basically a giant air conditioner!
The upper floor was split longways into four main sections. The first section was rather narrow, like a long hallway. On one side you had the exterior wall — giant motorized damper vents leading in from the outside world. This was the air intake of the building. On the other side, a floor-to-ceiling zigzagged wall. Imagine a long segment of three-dimensional V's laid forward on their faces — one next to another. Each zig and zag made of massive corrugated structures stretching across its surface, similar to the pattern found at the edge of a cardboard box but repeated over and over. This is where the water consumption happens. These are the evaporators. Water is trickled down those corrugations and is evaporated by the air passing through it. This process removes the heat from the air.
The next section had the other side of the zigzagging wall, and the wall opposite that was made up almost entirely of large fans. Imagine a row of six fans — each two feet wide by two feet tall — then five of those rows, one on top of the other. This 6x5 pattern repeated along the entire length of the wall. This is how the air is sucked in from the previous section, through the corrugations, and then these fans push the now-cooled air into the third section. The third section was much wider. This was the tops of those chimneys I had seen earlier. Huge grates sat in the center of the floor, looking down the chimneys into the data hall below (the big four rooms). The cool air flows down the chimneys and into the data hall to provide cooling for the seemingly endless rows of servers. The fourth and final section had a relatively normal wall separating it completely from section three, but large grates lining the floor allowed you to see into the data hall below. Much larger fans (maybe five feet by five feet) lined the other exterior wall, blowing hot air out of the building. The hot air rises to the ceiling of the data hall and is sucked through these grates and vented out of the building.
When I went home that night, I spent the evening trying to process all that I had seen. "It's kinda crazy," I said out loud. As I curled up in bed and fell asleep, my mind slowed. "All I have to do is run fire alarm tomorrow."
I worked there for two years and became numb to the extraordinary technology and engineering of the facility. Like the rooms with alien-looking water purification devices — or the endless miles and miles of wires connecting everything together. It really wasn't a building at all. It was a machine you could walk around in. Imagine the thousands of engineers it took to design all of that, and then the many thousands more people who took those designs and made them a reality. How many hundreds of millions of dollars do you think were spent on just those six buildings? I don't know the answer, but what I do know — it was made abundantly clear to me — Facebook knew what they were doing. They knew how to build a world-class data center. They knew how to deal with the power and cooling needs of their systems. And they did it in the most efficient way current engineering allows.
America's Water Consumption and Distribution Problem
Everybody keeps saying America is running out of fresh water — and that machines like the one I worked inside of are drinking it dry. So before I bought into the panic, I went and pulled the actual numbers. Not headlines. The government's own measurements. And what I found doesn't match the story.
But before I show you a single number, you need to know the one distinction that this entire debate lives or dies on. Because almost every scary water headline you've ever read is built on blurring it.
Withdrawal vs. Consumption
Withdrawal is how much water you take out of the river, lake, or aquifer. Consumption is how much you never give back — water that evaporates into the sky, gets baked into a crop, or otherwise leaves the system for good (USDA Economic Research Service).
Here's why that matters. Power plants withdraw about 83 billion gallons of fresh water every day for cooling — second only to farms (USGS, 2010–2020). Huge, scary-sounding number. But they hand nearly all of it right back to the river, a little warmer. (And yes — if you want to argue that warmer return water harms rivers and the life in them, that's a fair conversation. But it's a different argument entirely from the one everybody's making right now. The mainstream claim is that we're consuming the water — that it's disappearing. That's the claim I'm testing here, so temperature is a conversation for another day.) In the government's last full national consumptive accounting, only about 3% of what power plants withdrew was actually consumed (USDA Economic Research Service). Farms are the opposite: most of what irrigation takes never comes back — it transpires through the crop and rides the wind out of the watershed.
So whenever someone hits you with a big water number, ask the only question that matters: how much of that did they give back? Keep that question loaded. We're going to use it.
How much water do data centers actually use? The whole picture.
I'm going to give you the worst-case number, because if my argument only works on the flattering number, it's not much of an argument.
Data centers use water two ways. The first is direct — the evaporators I stood next to, trickling water into the airstream, gone as vapor. In 2023, every data center in America combined directly consumed about 66 billion liters — 17.4 billion gallons for the year (DOE / Lawrence Berkeley National Laboratory, 2024 U.S. Data Center Energy Usage Report). The second is indirect — the water consumed by the power plants generating their electricity. The same report puts that at nearly 800 billion liters for 2023 — about 211 billion gallons, twelve times the direct number.
Add them up. The total effective water consumption of every data center in the United States — the buildings and their electricity — was roughly 229 billion gallons in 2023. That's the whole bill. Nothing hidden.
Now for the other side of the scale. The USGS has counted the nation's water since 1950 — first in five-year reports, the last covering 2015 (Circular 1441), and now through a newer model-based program covering 2010–2020 (USGS National Water Availability Assessment, published 2025). Per that newest assessment, the three biggest uses of fresh water — irrigation, power plant cooling, and public supply, which together cover about 90% of everything the nation withdraws — average roughly 224 billion gallons per day. Crop irrigation alone is 105 billion of that. Every single day.
Read those against each other. American farms withdraw the entire annual water footprint of every data center in the country — direct, indirect, all of it — in about two days. Fifty-two hours of irrigation equals a year of the entire digital economy's water bill.
Run it as a percentage: 229 billion gallons a year ÷ 365 = about 627 million gallons a day. Against 224 billion a day, that's 0.3%. Under a third of one percent — counting everything.
Now, a careful reader might catch me breaking my own rule here. I just put a consumption number on top of a withdrawal number — after spending three paragraphs telling you those aren't the same thing. Fair. So let's run it strictly, consumption over consumption. The government's last full consumptive accounting put the nation's freshwater consumption at roughly 100 billion gallons a day (USDA Economic Research Service). Against that, the data centers' 627 million gallons a day is about 0.6%. Measure it the strict way and the number roughly doubles — to two-thirds of one percent. Pick whichever ratio you like. Neither one is a water crisis.
Let's go absolutely insane
Still not convinced? Fine — let's 10x it. Pretend we built ten copies of every data center in America overnight, and ten times the electricity demand with them, water bill and all.
The math, out loud: 627 million gallons a day × 10 = 6.3 billion gallons a day. Against the ~224 billion gallons withdrawn daily for the nation's three biggest uses (USGS) — that's about 2.8%. Ten times the entire industry, charged for every drop its power plants consume, and it still can't crack 3% of the country's fresh water. And notice I'm using the smaller denominator — measuring against only ~90% of the nation's withdrawals makes data centers look bigger, not smaller. I'm stacking the deck against my own argument, and it still isn't close.
And if your objection is that 2023 numbers predate the AI boom — you're right that the buildout is real. The same federal report projects data centers could reach 7 to 12% of U.S. electricity by 2028 (LBNL) — call it double or triple today's footprint, water bill and all. I just gave you ten times, and charged you for the hydro lakes while I was at it.
Whose water is the indirect water, anyway?
Here's the thing about that 211-billion-gallon indirect number, and it's the part nobody saying "AI is drinking your river" wants to sit with.
Data centers bought about 4.4% of America's electricity in 2023 — 176 terawatt-hours (LBNL). And the water intensity of the electricity they bought was 4.52 liters per kilowatt-hour, against a national grid average of 4.35. Read those two numbers together: data centers consume water through electricity in almost exact proportion to how much electricity they buy, at almost exactly average thirstiness. Their power is no thirstier than the power running your dishwasher.
Which means the indirect water isn't a property of data centers at all. It's a property of the grid. If you charge data centers for the water their electricity consumed, you have to charge every kilowatt-hour in America the same way — your air conditioner, the hospital down the street, the EV in your neighbor's driveway. The argument proves too much, and that's how you know it's broken.
Two more things the report itself admits about that indirect number (LBNL): it charges data centers for water evaporating off hydroelectric reservoirs — if your grid has a dam on it, you inherit a share of the lake's evaporation — and it ignores the renewable power contracts data center operators actually sign, assuming everyone drinks from the plain local grid. Both assumptions push the number up. I used it anyway. It still rounds to nothing.
So where is the fresh water actually going?
Farms. It was always farms. Irrigation accounts for 47% of the nation's total freshwater withdrawals (USDA ERS, citing USGS, 2010–2020). And when you switch to the strict standard — consumption, water gone for good — agriculture accounts for 80 to 90% of everything this country uses up (USDA ERS). Ask the loaded question: how much does agriculture give back? Almost none of it.
And here's the part that should end the "running out" panic entirely: national water use is falling. Freshwater withdrawals dropped from about 306 billion gallons a day in 2010 to 281 billion in 2015 — a decline of roughly 5 billion gallons a day, every year, putting total withdrawals at their lowest level since before 1970 (USGS Circular 1441; EPA). Read that again. Lowest since before 1970 — while the population grew the whole time. From 1950 to 2010, the economy grew nearly sevenfold while producing almost four times the economic value per gallon of water by the end of that stretch (EPA). More people, way more economy, less water per person. That is not what running out looks like. That's what getting better looks like.
None of which means there are no water problems. There are real ones — they're just regional and specific, not national and vague. The High Plains Aquifer, which supplies parts of eight states, is being pumped faster than nature refills it, dropping the water table year after year (EPA/USGS). The Colorado River is genuinely over-committed. Those are distribution and allocation problems — the right water in the wrong places, sold at the wrong prices, poured into the wrong crops. Not a national shortage.
And I'll grant the local fights completely. If a company drops a data center into a basin that's already overdrawn, the people standing up at that county meeting aren't innumerate — they're defending their well, and they should drive a hard bargain on siting, sourcing, and what gets returned. But notice what kind of argument that is. It's about where the water gets used, not whether America has enough — the same distribution problem as growing alfalfa in the desert, with the same local fix: price the water honestly and choose your neighbors accordingly. What it is not is evidence that the internet is drinking the country dry.
The machine and the scapegoat
Facebook knew exactly what they were doing when they built that facility. The most efficient engineering available, running on electricity no thirstier than anyone else's, consuming — buildings and power bill combined — a third of one percent of the nation's water. Meanwhile the real consumption, hundreds of times larger, flows quietly into fields most people will never think about. America doesn't have a fresh water scarcity problem. It has a distribution problem. The server farm just makes an easier villain than the alfalfa field.