People have always used a closed loop to move heat in and out of the data hall - but something has to keep that closed loop cool. That's often a cooling tower w

People have always used a closed loop to move heat in and out of the data hall - but something has to keep that closed loop cool. That's often a cooling tower which uses evaporating water to reject heat into the air in a way that's very energy efficient. Additionally, the power plants which supply electricity to the data centers have the same cooling problem. They also typically use cooling towers. It's not dishonest at all. Datacenters and fossil fuel power plants are absolutely evaporating fresh water for cooling. The piece that's missing from that discussion is that it helps them use less electricity.