Eagle Scout Brian Chan led boy scouts from Palo Alto's troop 5 in a project to build WAPIs - water pasteurization indicators - for our clean water project in Cameroon. And on his own initiative, Brian had the instructions translated and produced in French!
WAPIs are very clever gizmos that hang into a container of water, whether a pot over a fire or a plastic bottle in the sun. When the water reaches pasteurization temperature - which is lower than water's boiling point - it is safe to drink. At that temperature the soy wax in the tube melts and runs to the other end, providing a simple-to-read safety indicator. The WAPIs are almost endlessly reusable; just move the hook to the other end of the wire for the next use.
The WAPIs will be distributed to families in the communities neighboring Mefou Park who are participating in the clean water project being run by Ape Action. Though located in the lush tropical rainforest, all surface water is contaminated. Ape Action is working to educate the communities on various methods of purification, one of which is through heat. By using the WAPIs the families will be able to have safe water in less time and for less firewood than it now takes.
A huge thank-you to Brian and Troop 5!