copper, zinc, and cadmium, then added tea leaves, allowing them to steep for a few seconds up to 24 hours, per Smart Water ...

They tested a variety of teas — black, green, oolong, white, chamomile, and rooibos — by steeping them in water spiked with ...

“But what is special is that tea happens to be the most consumed beverage in the world.” Using water contaminated with lead, chromium, copper, zinc ... for longer periods or even overnight — like iced ...