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CIWEM’s reaction to government announcement mandating sustainable drainage (SuDS)

CIWEM responds to government announcement

[Original source: CIWEM)

CIWEM welcomes the government’s announcement that it will finally implement Schedule 3 of the Flood and Water Management Act 2010 which will mandate sustainable drainage (SuDS) in new developments. Following years of making the case for a more robust approach to SuDS, we are pleased to see sense finally prevail.

After more than a decade in which a mandatory approach was considered too burdensome for developers, government has finally recognised that the extensive benefits SuDS bring outweigh any learning curve challenges the construction industry may need to go through to mainstream the approach. Last month CIWEM alongside over 40 other expert bodies, including SocEnv, and academics wrote to Prime Minister Rishi Sunak to urge him to finally implement the legislation.

SuDS use nature-based approaches to slow, store or infiltrate rainwater that would otherwise risk overwhelming sewers, causing flooding and sewage pollution. Unlike a pipe, SuDS can provide a raft of benefits locally: Managing flash flood risk, filtering and cleaning contaminated water, increasing nature habitat in urban areas, providing shading from heatwaves, helping recharge water resources, and improving local air quality.

These benefits can only be unlocked if SuDS are built in the right way, hence the need for approved standards. That’s not to say they’re difficult to build – they’re very often simple structures.

Over the past decade outmoded thinking has cast SuDS as complex and expensive and a barrier to rapidly increasing the supply of housing in England. A non-statutory approach to encouraging SuDS through the planning system, introduced in 2014, failed to unlock their potential. Now, with flash flood risk increasing and sewage pollution widespread, the mandatory approach set out in Schedule 3 is long-overdue.

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