ACCESS TO IMPROVED SANITATION
Lagos is the only state in the country when almost the entire population has improved sanitary which basically refers to the presence of a facility that hygienically human excreta from hum contact. Examples of such a facility include the flush toilet, connection to a piped sewer system, connection to a septic system, flush / pour-flush to a pit latrine, pit latrine with slab, ventilated improved pit latrine (abbreviated as VIP latrine) or a composting toilet.
On the flip side, unimproved sanitation include public or shared latrine (meaning a toilet that is used by more than one household), flush/pour flush to elsewhere (not into a pit, septic tank, or sewer), pit latrine without slab, bucket latrines, hanging toilet / latrine or having no facilities and having to defecate in public.