In 2008 an independent team of researchers began a door-by-door survey named "Map Kibera Project" with the aim to map physical and socio-demographic features of the slum. A trained team of locals, after having developed an ad-hoc surveying methodology, has so far gathered census data of over 15,000 people and completed the mapping of 5000 structures, services (public toilets, schools), and infrastructures (drainage system, water and electricity supply) in the village of Kianda. On the basis of data collected in Kianda, the Map Kibera Project team estimated that the whole Kibera slum could be inhabited by a total population ranging from 235,000 to a maximum of 270,000 people, dramatically scaling down all previous figures.