That's an interesting link. I didn't realize how frequently dinnerware contains lead or cadmium. That seems a little insane. I don't have much else to add though, I agree your best bet is a plain glass tumbler from a reputable domestic manufacturer. I use stainless steel sometimes too, which is not perfect, especially for very hot or acidic beverages, but I mean hell, I cook in with stainless. And I do see the chromium leaching. Iron and nickel too but you can't see them. The studies are conflicting how harmful it is, but a lot more is going to come from cooking with it than drinking water from it.