§ Mr. WatersonTo ask the Secretary of State for the Environment, Transport and the Regions what steps he is taking to encourage the use of sustainable urban drainage systems in new housing developments. [138002]
§ Ms Beverley HughesSustainable drainage systems (SUDS), which deal with rainwater as near its source as possible, are recognised as assisting in the control of both the quantity and quality of run-off from developed areas, as well as contributing to amenity, biodiversity and good design. My Department is actively encouraging the development of sustainable drainage systems for housing and other developments in a number of ways. Indeed, the Under-Secretary of State, my hon. Friend the Member for Sunderland, South (Mr. Mullin), gave the keynote message at a conference on SUDs earlier this month.
We consulted earlier this year on new Planning Policy Guidance Note (PPG) 25 "Development and flood risk", which refers to the need for local planning authorities to consider the run-off implications of proposed development and encourage more sustainable drainage systems. This guidance is likely to be confirmed and strengthened when the final version of PPG 25 is issued shortly.
We are currently also revising PPG 23 "Planning and pollution control". The new version will recognise the potential contribution of SUDS and we hope to consult on a draft next year.
We are currently consulting on the Review of Part H of the Building Regulations. This includes a recommendation that infiltration drainage be provided, in most situations, to absorb rainwater from buildings within the site.
The Highways Agency, in consultation with the devolved Administrations is developing advice for inclusion in the "Design Manual for Roads and Bridges" on "Vegetative Treatment Systems for Highway Runoff'. This is expected to be published next year.
We and other interested parties, including the water industry and house-builders, have also supported research projects in this area, leading to the production of design manuals and a forthcoming best practice manual. We will continue to support research necessary to assist in overcoming any perceived barriers to the implementation of SUDS on a more widespread basis.