Salt water is a nasty substance and difficult to handle properly. That salt interacts with metal and other substances in the pipeline, etc….
You might not have to go to fully potable (drinkable) status to get something that will work for cooling, but there’s a lot of processing that needs to happen.
You might not have to go to fully potable (drinkable) status to get something that will work for cooling, but there’s a lot of processing that needs to happen.