SuDS in Wales

This susdrain event will combine a seminar and site visit to discuss the approaches to SuDS delivery in Wales. There will be a particular focus on Greener Grangetown which is an extensive SuDS retrofit scheme in Cardiff.


Wales with its unique set of legislation and drivers is developing the ‘perfect storm’ for the delivery of sustainable drainage. January 2019 sees Welsh Government implementing Schedule 3 of the Flood and Water Management Act that mandates the inclusion of SuDS on new developments and formally introduces SuDS Approval Bodies.

Wales also has seen a number of high profile and large scale retrofit SuDS schemes. One of the most recent and largest schemes is Greener Grangetown. This scheme manages runoff from 12 streets, improves the quality of the urban spaces and places and delivers other multiple benefits. It manages runoff from roofs and roads in Grangetown, using over 100 rain gardens and 135 trees before discharging into the River Taff.

Greener Grangetown has been delivered through a partnership of Cardiff Council; Dwr Cymru Welsh Water; Natural Resources Wales; Arup; ERH Communications and Civil Engineering Ltd with additional financial support from the Landfill Communities Fund.

This susdrain event will discuss the approach to delivering new build and retrofit SuDS in Wales and provide an opportunity to visit and discuss the Greener Grangetown SuDS scheme with those involved in its design and delivery.

The site visit will be in September in the UK – so despite the good summer so far and the fact that schools will have started please bring footwear and clothes appropriate for the weather. PPE will not be necessary.

Why attend?
The speakers have been involved in developing approaches to deliver SuDS on the ground and have been involved with SuDS policy and delivery in Wales for a number of years. The objectives of this seminar and site visit are to:

  • Share an update on how Wales is progressing SuDS
  • Provide an overview of the design philosophy and challenges of Greener Grangetown
  • Visit and explore the rain gardens and blue green infrastructure included with Greener Grangetown

Provide a forum to discuss SuDS delivery in Wales and key design aspects of Greener Grangetown 

13:30    Registration and networking

14:00    Chair’s welcome and introduction

             Graham Fairhurst, susdrain Chair

14:10    Delivering SuDS in Wales – new build and retrofit

             Martyn Evans, Natural Resources Wales

             Michelle Russ, Welsh Water Capital Delivery Alliance

14:30    Designing and delivering Greener Grangetown

             Chris Ellis, Arup

             Ian Titherington, Cardiff City Council

 14.50    Site visit to Greener Grangetown

            Twenty minute walk to the site and a tour of the scheme, and walk back to County Hall.
            A number of ‘tour guides’ will be on hand and delegates will be asked
            to consider the scheme and complete some feedback

 16:20    Q&A and facilitated discussion

 17:00    Close

Who should attend?
Regulators, Engineers, Landscape architects, Urban designers, Contractors, Developers, those working in Local planning authorities, those working in Lead Local flood authorities, those working in sewerage undertakers.

6 September 2018
14:00 - 17:00

Cardiff County Hall
Atlantic Wharf
CF10 4UW

Free to CIRIA members and non members

If you are experiencing issues registering for this event online please contact us on 020 7549 3300  or email 

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Further information
For further information on CIRIA membership and other services, please contact:
Tel: 020 7549 3300
Fax: 020 7549 3349

06/09/2018 - 06/09/2018
Cardiff County Hall
Atlantic Wharf

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