The environment department (DEFRA) missed out key pieces of evidence in drawing up its preferred option on sustainable drainage systems (SUDS) implementation, according to a summary of consultation responses.1
The consultation, undertaken between December 2011 and March 2012, received 302 responses on making new developments in England include SUDS. It covered the affordability, timing and scale of such systems.
SUDS moderate surface run-off by storing water above ground and limiting flows into sewers. This mitigates flooding risk and reduces polluted water flow.