While this information is rather shocking, remember that you can also get bottled water in actual, honest-to-goodness glass bottles too, not just
plastic. Although the water that comes in glass bottles tends to be rather pricey.
Given enough time water can dissolve anything and everything. Even non-polar molecules can dissolve into water, although not to any appreciable level
and so we say that they don't.
Oil won't dissolve into water because its non polar for example but sugar or salt will because they are polar.
Water is the 'universal solvent'
I guess I'm just saying it's inevitable that you'll find metals in water if the container has metal in it. A good example is if you store your
drinks in lead crystal - You'll get lead in it.