5.6 Water-flushed systems

All of the latrine technologies described so far are dry systems. These are the most appropriate systems for places where there is limited water supply. If water is piped into the premises or is otherwise easily available, then a water-flushed system can be used. Water-flushed toilets, also known as water carriage or water-borne toilets, can be connected to a pit, septic tank or sewer. A septic tank is an underground, watertight tank in which sewage is collected. Faecal solids accumulate in the tank and partially treated liquid is discharged into the ground. You will learn more about septic tanks in Study Session 6.

5.5.3  Biogas latrines

5.6.1  Pour-flush toilets