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Data centers consume more water than california cities

Data Centers | Water Consumption Surpasses Major California Cities, New Insights Emerge

By

Dr. Emily Vargas

Aug 26, 2026, 04:09 PM

Updated

Aug 26, 2026, 10:09 PM

2 minutes needed to read

A data center with cooling towers surrounded by dry landscape, highlighting water usage issues in California
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A recent report reveals that data centers in seven states are using more water annually than Californiaโ€™s entire urban population. This finding raises significant concerns about water supply issues linked to the increasing energy demands of these facilities.

The Water Consumption Figures

The study titled The Water Behind the Watts states that data centers consume about 3.4 trillion gallons of freshwater yearly. To clarify:

  • They account for 10.4 million acre-feet annually, exceeding California's urban demand of 8 million acre-feet.

  • This figure is roughly 12 times the combined annual water use of cities like Los Angeles, Phoenix, and Washington, D.C.

Expert Opinions and New Data

Comments online have sparked controversies regarding the accuracy of these findings. Some users highlighted alternative research indicating significant discrepancies:

  • Sarah Porter, director of the Kyle Center for Water Policy at Arizona State University, noted that combining all data center water consumption figures can be misleading. According to her, a recent assessment indicated that the indirect consumptive water use by data centers amounts to only 650,000 acre-feet nationwide, based on 2024 Lawrence Berkeley National Laboratory data.

  • Porter emphasized that measuring consumptive useโ€”water permanently lost to the cycleโ€”is more relevant than focusing solely on withdrawals. "Adding up total direct and indirect water use by data centers is not particularly meaningful," she stated.

Concerns Over Environmental Impact

Users have voiced serious worries over the industry's water use:

"Where are the regulations?" questioned one commenter, calling attention to the strict regulations placed on residential water usage.

"Electric power generation for data centers needs huge volumes of water, yet much gets returned to its source," another commented, illustrating the complexities of water withdrawals versus consumption.

The Industry under Scrutiny

While some comments defended data centersโ€™ relative water use compared to sectors like agriculture, the mounting criticism suggests a need for more oversight:

  • Users are increasingly alarmed at the perceived lack of regulations, feeling that unfair comparisons distort reality.

  • Concerns over health risks from water pollution have also emerged, with individuals stressing that chemicals used could pose serious dangers.

Key Points to Consider

  • โ–ณ Data centers consume 3.4 trillion gallons of freshwater yearly, according to the latest research.

  • โ–ฝ Public sentiment is heavily focused on concerns regarding environmental accountability.

  • โ€ป "This study might not tell the complete story," shared a top commenter.

As debate continues over the water consumption of data centers, it remains unclear how regulators will respond to these concerns. Thereโ€™s a growing need for a balanced approach to managing water resources as lawmakers consider new regulations. With California facing its own water challenges, the potential for conflict between technology firms and environmental advocates grows increasingly likely.