788f2c0d_n_and_waste___Practical_Action__Urban
[0] 6 [Rural] Once a toilet is full, there is usually space to build more within the household compound. [Urban] 
Space is limited and density of population is high resulting in the need to dispose of faecal sludge outside the plot once toilets fill up.
Practical Action Blogs » Water, sanitation and waste | Practical Action
Urban