Sustainable Drainage Systems (SuDS) offer an approach to drainage that mitigates the impact of new development on flood risk and builds our resilience to flooding. It also provides opportunities to remove pollutants from urban run-off at source, and combines water management with green space, with benefits for amenity, recreation and wildlife.

Local planning policy and decisions on major developments – 10 dwellings or more, or equivalent non-residential or mixed development – are expected to make sure that sustainable drainage systems for the management of run-off are put in place, unless demonstrated to be inappropriate.

The current national policy requirement, that all new developments in areas at risk of flooding should give priority to the use of sustainable drainage systems, will continue to apply.