Green Options

A Swedish inventor has unveiled a solar-powered water purifier that could provide billions of the world’s poorest people with access to clean and disease-free drinking water [video].

The device, called the Solvatten, (Swedish for ’sun water’), looks much the same as a standard jerrycan and can be filled with up to ten liters of water, opened out, and left in the sun. A simple indicator shows either a red or green face to let users know when the water is safe to drink (typically after 3-4 hours), thus avoiding the risk of contracting water-borne diseases.