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rayinertoday at 4:11 AM19 repliesview on HN

Why can't we work up the political outrage over water-wasting agriculture in California that we managed to gin up over data centers: https://finance.biggo.com/news/202508220112_Data_Centers_vs_...

> Alfalfa irrigation (Colorado River): 1.6 trillion gallons annually

> Google data centers (global): 6.4 billion gallons in 2023

> Thermoelectric power plants: 41% of total US water use

EDIT: that page has a correction to some of the other numbers on the page, but the 6.4 billion gallons number quoted above for Google's data centers is in line with other sources: https://mostpolicyinitiative.org/science-note/data-center-wa... ("Google reported their data center water consumption increased from 4.3 billion gallons in 2021 to 6.1 billion gallons in 2024.").


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ChuckMcMtoday at 5:10 AM

Its a fair question, California agriculture tends to use 11 trillion gallons (34e6 acre feet[1][2]) of water annually. (about 1,700 Googles worth). Generally from a market driven standpoint agricultural users are trying to get maximum $/acre out of their land. I'm trying to convince the state legislature to reclassify "solar farms"[3] as agriculture (as opposed to 'industrial' that they are today) which would allow a farm to decide on an acre by acre basis how much to plant and how much to put into solar farming. Presuming batteries were included in that allowance, 350,000 acres of California farmland as solar farms (panels + batteries for 24/7 power) would power the entire state 24/7 with no need for coal, gas, or nuclear power plants. 100% green energy.

[1] https://en.wikipedia.org/wiki/Water_in_California

[2] https://www.convertunits.com/from/billion+gallons/to/acre+fo...

[3] "Agrivoltaics as a climate-smart and resilient solution for midday depression in photosynthesis in dryland regions" -- https://www.nature.com/articles/s44264-025-00073-1

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throwaway2037today at 4:37 AM

    > Thermoelectric power plants: 41% of total US water use
I did some research on this statistic. More than 90% of this is returned to source. So if the power plant is drawing water from a river (or aquifer), it is returned after being used to generate electricity (create steam, turn turbines).

For example, if you have a 1GW coal powerplant on a river, it might draw 4 billion liters of water per day, but will only evaporate about 5-10% of that amount. The rest is returned to the river. Of course, this is much less exciting (click-baity) than writing "41% of US water use is for thermoelectric power plants".

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supriyo-biswastoday at 4:30 AM

Farming is a necessary activity and in most countries, they are also a politically influential group.

The case for data centers in the age of AI is weaker, and the only effects for the average person are noise, pollution, higher electricity costs, higher water costs, for the ultimate "benefit" of losing your job.

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JumpCrisscrosstoday at 4:28 AM

Nobody actually cares about water use. It's a totem for other activism efforts. Data-centre protests aren't about water, they're about wealth inequality and Altman, Musk and Zuckerberg being hated men.

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voakbasdatoday at 4:28 AM

Even worse, my understanding is that much of that alfalfa gets put into shipping containers and sold overseas. The agricultural drain on the aquifers does not even benefit US ranchers.

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Omniusaspirertoday at 7:59 AM

California water policy vs other western states in one image:

https://www.google.com/maps/place/Sandy+Valley,+NV+89019/@35...

A town of 1700 people with a rapidly depleting aquifer (600 AF/yr recharge, equal to a single one of those circles) so 1 or 2 farmers with no restrictions on water usage can grow as much alfalfa as they'd like.

fastballtoday at 4:19 AM

The thing about data centers and thermoelectric power plants is that you can make them effectively closed cycle, vs agriculture where that is somewhat intractable.

Not saying that is true today though.

tzstoday at 4:30 AM

Because a lot more consumers care about the milk that comes from the dairy cows in California that consume something like 75% of that alfalfa and the meat that comes from the animals that consume the rest than care about data centers?

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sylostoday at 6:34 AM

I know plenty of folks who got worked up over the wasteful farming that drains and damages aquifers. much like the penalties that kardashians received when they broke the water usage laws, it amounted to nada.

Melatonictoday at 6:43 AM

They do and have been - unfortunately the farms are far from most people and isolated. And in super hot arid areas. Not ideal but many people aren't directly affected

MengerSpongetoday at 4:28 AM

Million, billion, and trillion sadly sound kind of the same when you talk about it.

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avazhitoday at 4:24 AM

Probably because food and agriculture (in the region that produces a quarter of America’s domestic food supply) are required for life, while data centers aren’t?

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pstuarttoday at 4:41 AM

There has been outrage. It's yet another tragedy of the commons.

Water pricing should be revisited to be closer to its true value -- and while food production should be recognized as essential, even that has to be rethought: is growing alfalfa for dairy less vital than growing vegetables? Especially if that dairy is produced and consumed in Saudi Arabia?

The other thing that we should be doing all over is better management of our watersheds so we can try to replenish those aquifers.

darigtoday at 4:21 AM

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aaron695today at 7:07 AM

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topatotoday at 4:32 AM

lol, if you bothered to check the reference your “article” stole from, you’d find a medium post that includes ANOTHER link to a follow up medium post entitled, “I was wrong about data center water consumption”

It’s not 6 billion per day. It’s 650 billion per day. In the United States alone.

https://www.construction-physics.com/p/i-was-wrong-about-dat...

lol

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bradortoday at 5:42 AM

84.1% of people have <115 IQ. The minimum required to critically think about the modern world and affect its function.

With AI that minimum is expected to increase.

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