Will I need to implement SuDS in my new development?

As of 7^th January 2019, all new developments comprising more than one building or where the construction area is 100m² or greater, will require sustainable drainage systems (SuDS).

 What is SuDS?

Sustainable Drainage Systems (SuDS) aim to mimic natural processes and manage the flow and volume of surface water runoff from a site as close to its source as possible. SuDS can deliver multiple benefits including:

• Flood risk reduction;
• Improved water quality;
• Enhanced biodiversity;
• Health and well-being.

What is the new legislation?

Under new legislation, Schedule 3 of the Flood and Water Management Act 2010, SuDS must be designed and built in accordance with Statutory SuDS Standards, published by Welsh Ministers. These standards require the method, destination and management of surface water disposal from a site to be clearly outlined and submitted to the relevant SuDS Approving Body (SAB). Prior to construction, any proposed SuDS scheme must be approved by the SuDS Approving Body (SAB).

Schedule 3 of the Flood and Water Management Act 2010 has been introduced to ensure that SuDS are considered as part of the planning process and reduce the risk of surface water flooding as a result of increased impermeable surfacing associated with new development.

According to Environment Minister, Hannah Blythyn “Around 163,000 properties in Wales are currently at risk of surface water flooding. Employing sustainable drainage systems are estimated to reduce flood damage by up to 30%.”

What does this mean moving forward?

From 7^th January 2019 onwards:

• All new developments of more than one house or where the construction area is 100m² or greater, will require sustainable drainage systems (SuDS) for managing surface water.
• Drainage systems for all new developments must be designed and built in accordance with statutory SuDS standards.
• Local Authorities will become the SuDS Approving Body (SAB).
• SuDS schemes must be approved by the Local Authority acting in its SAB role before construction work begins. The SAB will have a duty to adopt compliant SuDS so long as it is built and functions in accordance with the approved proposals, including any SAB conditions of approval.

How can I progress with my development?

If you have a development within Wales which comprises more than one house or is 100m² or greater you will now require a SuDS assessment as part of the planning process.

If you would like to discuss SuDS, Flood Consequence Assessment, or any other element of drainage and flood risk within planning, please don’t hesitate to contact one of our experienced consultants on 01293 214444, or email info@unda.co.uk