There's an old saying about developing world drinking water that goes "If it's brown, drink it down; if it's black, send it back." The plumbing infrastructure in many countries is so poor that clean drinking water is still a precious commodity. Enter the UV-tube, a cheap, portable, solar-powered device that claims to purify five liters of water per minute. Developed by a team at UC Berkeley (from an old potato cannon, it seems), the purifier has been succesfully field-tested in tsunami-ravaged Southeast Asia and is ready for deployment stateside. If you can't wait for the commercial version, try MacGuyvering your own for under $70.
Sanitize your water with the power of UV light
All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.