Advantages
Aesthetically pleasing and provides animal habitat
High reduction of BOD and solids; moderate pathogen removal
Can be built and repaired with locally available materials
No electrical energy is required
No real problems with odours if designed and maintained correctly
No chemical required, process stability
Low operating costs
Can be combined with aquaculture and agriculture
Disadvantages
May facilitate mosquito breeding
Requires a large land area
Long start-up time to work at full capacity
Requires expert design and construction
Requires supervision
Not very tolerant to cold climates