alt Hacker News> A typical data center uses 300,000 gallons of water each day (equivalent to the demands of about 1,000 households), but large data centers can use an estimated 5 million gallons of water each day
https://www.brookings.edu/articles/ai-data-centers-and-water...
Only if allowed to. Most data centres I've used have no connection to water from the data centre halls other than to the toilets. Using open loop water cooling is a cost cutting measure it's a choice whether or not to allow.