Project scale and technical level are major components in determining if a technology is a good fit for a developing community. Biosand filters promote progress and independence and are at a high enough technical level to be managed by the community. Biosand filters are made of locally sourced materials and are constructed and assembled entirely by the project teams in Africa. Biosand filters are a low-tech solution with a high effectiveness removing up to 99.0% of viruses and up to 98.5% of bacteria from water.