Mama Biashara's Raincatchers provide clean drinking water (and have wiped out waterborn disease) for an average of five families per Raincatcher. Each one costs around £75 and is constructed and maintained by the small communities who share them.
The legal definition of a charitable organization (and of charity) varies between countries and in some instances regions of the country. The regulation, the tax treatment, and the way in which charity law affects charitable organizations also vary.