About 800,000,000 people worldwide – that’s almost one in ten, more than the population of the U.S. – don’t have reliable access to clean water.

Using a technology first developed to reuse dirty laundry water, scientists have developed a water treatment plant the size of a teabag. Inside, a potent chemical triple-threat removes microbes, heavy metals, silt and dirt to produce clean, safe water one bucket at a time.