They should counter with, "The bottle says Cleveland because we don't want any Fiji Arsenic"..........
I've also found that Clevelanders enjoy poking fun at their city as much as anyone. I wouldn't be surprised if Fiji's little joke on the label didn't help sales of their water there.
However, Cleveland's intentional misrepresentation that Fiji's water might be poisonous might be grounds for a lawsuit if it hurts their sales.