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A Stanford engineer went to Bangladesh to observe how the residents collected water. The challenge? Build a simple, cheap, easy to use device that would allow the people to clean the water themselves.
This video is part of our Engineering Is: Cleaning Poop from Drinking Water e-book. The e-book explores the science and engineering principles behind the Lotus Water project's device designed to purify drinking water in Dhaka, Bangladesh. The e-book includes videos, interactives and media making opportunities. You can find our other e-books at kqed.org/ebooks.