အိုဒင်ဆီတွင်ရေကြီးမှုများ

i think a combination of both systems is the best solution.

sustainable drainage

i would prefer the sustainable drainage. because the sustainable option would mean more nature, more recreational areas, while also serving a practical purpose with low maintenance costs (new sewage systems are very expensive).

conventional... because it's already there.

if i could only choose one: sustainable system, because it works and creates a different atmosphere and has other benefits such as reducing peak flows and cleaning water. but i think both systems could work very well together.

sustainable drainage system

the sustainable system. because it naturally infiltrates into the groundwater and would be very beneficial for society with more green recreational areas.

i would choose the most efficient.

hmm, that depends...

i think it is not a fair comparison. and what does "sustainable" actually cover? the sustainable solution also has some problems related to, for example, the need for more surface area, open access to polluted waters for playing children, etc., but the "sustainable" picture, however, looks very green and nice, and therefore i will prefer this.