Question to the Department for Environment, Food and Rural Affairs:
To ask the Secretary of State for Environment, Food and Rural Affairs, what recent assessment she has made of (a) the potential economic merits of water attenuation and retention by sustainable drainage systems and (b) the capital and maintenance costs of sustainable drainage systems.
The previous coalition Government prepared an impact assessment for sustainable drainage policy, evaluated as fit for purpose by the Regulatory Policy Committee in February 2014. The impact assessment was informed by research available on Defra’s Science and Research Projects website.