> Semantically, damning water in the Great Lakes Watershed (how Columbus get's its water)
Wrong. Columbus gets most of its water from the Scioto River, part of the Ohio/Mississippi River watershed.
https://en.wikipedia.org/wiki/Scioto_River
You might be thinking about Cleveland instead, but I don't think anyone dares drink from the Cuyahoga River, since its had a history of catching fire.