The Hippo Roller has made life easier for thousands of water-starved people–but it’s very expensive. The WaterWheel–designed to solve the water crisis in India–is the next generation of wheeled water carriers. Not everyone can just turn on the tap to access clean water; in the developing world, women regularly carry five-gallon, 42-pound buckets of water on their heads.
Link:
The WaterWheel Makes Clean Water Cheaper, Easier To Carry