As scrutiny intensifies over the environmental impact of artificial intelligence and cloud computing, major hyperscale data center operators are under growing pressure to demonstrate sustainable resource management. In response, Amazon has unveiled new figures highlighting significant improvements in its water efficiency, positioning itself ahead of key competitors.

The company reports that its global data center operations achieved a 52% improvement in water efficiency over the past five years. According to Amazon, its facilities now consume just 0.12 liters of water per kilowatt-hour (L/kWh) of energy used, compared with an industry average of 0.84 L/kWh—making them seven times more water-efficient than the broader sector.

Figure 1. Data Center Cooling System.

The announcement reflects a broader shift in the cloud industry, where sustainability metrics are becoming increasingly important alongside computing performance. Analysts note that environmental efficiency is emerging as a key area of competition among hyperscalers as AI workloads continue to drive rapid infrastructure expansion. Figure 1 shows data center cooling system.

Cooling Innovations Drive Water Savings

Amazon attributes its progress to a combination of advanced cooling technologies and operational improvements. Approximately 90% of the time, the company relies on "free air cooling," a method that draws in outside air to absorb heat from data center equipment before releasing it back into the environment. Because the process does not require water, it significantly reduces overall consumption.

During warmer conditions, Amazon switches to evaporative cooling systems. These systems pass air through water-saturated materials, allowing evaporation to remove heat and lower air temperatures by 5 to 10 degrees Fahrenheit before it circulates through the facility.

The company has also increased the operating temperature limits of its data centers [1]. Through years of engineering refinements, Amazon has developed server systems capable of functioning reliably at higher temperatures, enabling facilities to operate at up to 85°F while reducing cooling-related water usage.

Outperforming Industry Peers

Amazon's reported water-use intensity of 0.12 L/kWh places it ahead of several major cloud providers. Microsoft reported 0.27 L/kWh in 2025, improving from 0.30 L/kWh the previous year. Meta has maintained water usage levels around 0.20 L/kWh, while Google has averaged approximately 1.15 L/kWh in recent years.

As AI infrastructure continues to expand worldwide, transparency around water and energy consumption is becoming a critical benchmark. The latest figures suggest that sustainability performance is increasingly shaping competition among the world's largest cloud providers, with water efficiency emerging as a key differentiator in the race to support the next generation of AI services.

Reference:

1. https://www.networkworld.com/article/4184250/amazon-claims-its-data-centers-are-7x-more-water-efficient-than-the-industry-average.html

Cite this article:

Keerthana S (2026), Inside Amazon’s Push for Ultra-Efficient Data Center Water Use, AnaTechMaz, pp.190.