I haven't looked for a while, but when I ran by there this fall there wasn't any buildings. Just foundations. If I have some time I'll head up Mink Street and see what's there now.
The nearest water source would be Johnstown, a sleepy little burb with a sleepy little water plant. Columbus would probably have to plumb out there to get as much as they need.
There were stories about that when the project first started, but they all vanished.