Which of these two systems (conventional or sustainable) would you prefer? Why?
sustainable drainage system looks better.
sustainable is of course preferred, but if the conventional option is cheaper, it might be easier to implement.
sustainable drainage systems
sustainable drainage would be preferable, but considering the situation, conventional drainage might be more effective.
sustainable drainage. it addresses rainwater in a smarter way by utilizing it instead of merely viewing it as a problem.
sustainable
the question is very biased: of course i prefer something that includes the word "sustainable" and shows pictures with grass and trees compared to the two pictures below...
the first one, i like the green view and it also looks much better for both the environment and humanity.