www.wot.utwente.nl/publications/.../tippy-tap.pdf
This document describes how to make a Tippy Tap, a simple handwashing device with running water. The Tippy Tap consists of a 5 liter container hanging on a horizontal stick. The container can be tipped by pulling a rope through the cap. The rope is attached to a stick lying on the ground, which is pushed down by foot. As only the soap is touched during hand washing, the device is very hygienic.
This document is published by Mark Tiele Westra of Werkgroep OntwikkelingsTechnieken (WOT) University of Twente, the Netherlands