Data center water usage varies heavily by design and climate. Most data center providers are not openly publishing water usage, and when they do publish metrics they hide behind derived metrics like WUE. So I don't blame the opponents for any "hysteria".

When we look at data we actually have [0], we can see for example AWS data centers in Oregon consumed 284,000,000 gallons of water in 2024. By their own estimate 100% of that water is typically consumed in the summer months of June, July, August, and Sept. These are also the months that farms use the most irrigation, lawns use the most, etc. Also, keep in mind that Eastern Oregon has ideal weather for evaporative cooling (specifically low humidity). Evap cooling is used for data centers in more humid parts of the country/world and can be significantly less water efficient.

The average Oregon resident uses 80 gallons of water per day, or 29,200 gallons of water annually. And if you calculate it out In 2024, AWS in Oregon used water equivalent to 9726 residents' annual usage. Is that a lot? What if you add all the other data center operators in the area? I don't know. Is they causing unrealistic pressure on aquifiers and the Columbia River watershed? I don't know either. Is the trade off of water consumption for data centers worth it? I'm not really sure how to answer these questions, but I think it starts with data center operators and their utilities being more open about their usage. Today data center operators like to compare their newest DC designs to golf courses and household use and it's not showing the full story.

[0] https://www.oregon.gov/energy/get-involved/Documents/2026-03...