It's also used for humidification to avoid static discharges, apparently: https://datacenters.microsoft.com/sustainability/efficiency/ https://datacenters.micro

It's also used for humidification to avoid static discharges, apparently: https://datacenters.microsoft.com/sustainability/efficiency/ https://datacenters.microsoft.com/sustainability/efficiency/ Looking at the figures quoted there, this can explain why e.g. the Ariozona data center uses so much more water than the Singapore one, although evaporative (i.e. open loop) cooling probably also plays a role in many of these cases.