Amazon reveals exactly how much water its data centers used last year — and claims its 2.5 billion gallons puts it…
- Amazon says its data centers used 0.12L/kWh in 2025 – Google used 1.15L/kWh
- Air-based cooling is used 90% of the time, keeping water only for when it's really needed
- The company has also raised the safe operating temperatures for equipment, reducing cooling needs
Amazon has revealed exactly how much its global data center operations used in 2025, and at 2.5bn gallons (the equivalent of 9.5bn litres), it is less than we might have expected.
Even though 2025 was a big year for data center expansion, Amazon says water use at facilities it directly owned fell 2% year-over-year, noting an impressive Water Usage Effectiveness (WUE) of 0.12L/kWh – seven times better than the 0.84L/kWh industry average and a 52% self-improvement since 2021.
While closed-loop cooling likely drove some of this improvement, Amazon says its data centers now use outside air cooling around 90% of the time.
Amazon says data center water...
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