Sanitation facilities coverage, World

Number of people with access to different sanitation facilities. 'At least basic' are improved sanitation facilities not shared with other households; 'limited' are improvedfacilities shared with other households; 'unimproved' are facilities without a flush/pour flush (to piped sewer system, septic tank, pit latrine), ventilated improved pit (VIP)latrine, pit latrine with slab, or composting toilet.