Best form of sanitation

A facility designed to hygienically separate excreta from human contact. It must meet the basic criterion of a safely managed sanitation service. It should not be shared with other households. The excreta produced must be treated and disposed of on-site. They can be temporarily stored and then emptied, transported, and treated in an outside facility. They can also be transported through a sewerage network with wastewater and then treated in external facilities. The best sources of sanitation can be the connection to public sewers, connection to septic systems, siphon latrine, single pit latrine, pit latrine with improved ventilation.