Welsh Government publishes recommended non-statutory standards for SuDS

The Welsh Government has published new standards and guidance for sustainable drainage serving new developments in Wales. The standards have been developed with support from HR Wallingford and take account of the latest SuDS Manual from CIRIA and feedback from a public consultation in 2015.


There are six standards, dealing with runoff destination, hydraulic control, water quality, amenity, recreation and design. Guidance on each of these is also included in the document, along with links to further relevant sources of information to aid design, construction and maintenance. The document also includes a section on SuDS Principles, providing a list of the principles which underpin the design of surface water management schemes to meet the Standards.


The Standards are currently non-statutory. Their publication will allow local authority staff and developers to test their operation on a voluntary basis. However, if the Welsh Government decides to implement the SuDS provisions of the 2010 Flood and Water Management Act in Wales, they could form the basis of statutory standards

The standards can be downloaded here.
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