That only means they have to be built in counties which are part of that compact, or have approved provisions to return the water back to be net-neutral and comply with environmental impact laws (unless your Foxconn or legacy manufacturer or farmer). However, Beaver Dam WI as this article calls out is along a fresh water source and does not require Lake Michigan water.

The other locations like Oracle’s dc in Port Washington or MS in Racine/Kenosha area are located such that they are within the defined boundaries outlined and dc unlike Foxconn are all ‘closed-loop’ which of course isn’t entirely perfect but certainly not on the scale of Foxcon’s 7mil gal/day nonsense.