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Project Idea No. 967
By: Calista Huang from The Nueva School, California

Ensuring Clean Water and Proper Waste Disposal in Ghana

Due to the lack of government investment into basic infrastructure and public works, 22% of Ghanaians rely on surface water, a lower quality of water than what is safe, for their daily needs, and 67% of Ghanaians do not have access to proper toilet facilities, subjecting them to a higher risk of having diseases such as dysentery, cholera, and parasites that affect their health negatively. Improperly managed human waste disposal causes fecal matter to circle back into their water supply, forming a negative cycle that feeds on itself, diminishing the health of the Ghanaians: the people drink the infected water, causing their waste to also be infected; the waste infects their water supply, and infects more people who drink the water. This two-part solution ensures clean water supply for the six million people in Ghana, while providing 18 million Ghanaians access to an organic toilet in order to improve its sanitary condition at a sustainable cost to its economy and environment. Part 1: An Organic Water Filter - A Multi-Layer Water Filtration Tank. This design uses locally sourced environmentally-friendly organic parts and components, including activated carbon, banana peels, cilantro, bark, gravel, and a floating pond plant. These layers remove bacteria and toxins from the water, yielding water that is safe for the Ghanaians to use. Please refer to a prototype video at this link: https://youtu.be/mh8rjQkn6_k Part 2: An Organic Toilet to Process Human Waste. This toilet design applies red worm vermicomposting for a low cost, low maintenance, low environmental impact method to process human waste, as to not contaminate their water supply. In addition, the natural fertilizer byproduct can be reapplied to their own agriculture.

Focus on Ghana

This project addresses the following sustainability goals in Ghana: