Concerning sanitation, while most of the population is served by sewers, according to one source about 18.3 million people (18%) out of 65 are served by on-site sanitation systems such as septic tanks.
In terms of hygiene, although many people are connected to sewerage systems, a study indicates that approximately 18.3 million individuals (about 18% of the total population) rely on off-site sanitation methods like septic tanks.