That's a bit of an understatement. The Belgian overlords sold the label to Busch, just the label. Not the brewery in Latrobe, PA.
Any Rolling Rock made now is made in New Jersey with a chemical blend to try to mimick the actual spring water from Latrobe.
“with a chemical blend to”
A bit of a stretch. They adjust the mineral content of the water as just about every other brewer does.
No brewer puts “chemicals” in their beer.