From the article:<p><pre><code> …the products themselves contain metal levels up to 3,000 times above drinking water limits, the peer-reviewed research found.
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Thats not very toxic. That means you could put a quarter teaspoon of the concentrated product in every gallon of water, and legally distribute that water as tap water, which is even more strict than bottled water standards.<p>You could drink nothing but that water for your entire life, with no negative effect. In comparison, most household cleaning products aren't near that safe. (and the ones that are probably don't work)