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Sustainable Drainage Systems (SuDS)

Updated 10 April 2015

Implementation of the SuDS

The Department for Communities and Local Government (DCLG) jointly with the Department for Environment, food and Rural Affairs (Defra) has confirmed that SuDS systems will be implemented through the planning process and not under Schedule 3 of the Flood and Water Management Act (2010).

On 24 March 2015 the amended Development Management Order which lists those authorities as statutory consultees within the planning process and what they will be consulted on, was laid before parliament.

What does this mean for Hampshire County Council?

As the Lead Local Flood Authority (LLFA) Hampshire County council is a statutory consultee for Surface Water Drainage on applications for major development.

“Major development” means development involving any one or more of the following:

(a) the winning and working of minerals or the use of land for mineral-working deposits

(b) waste development

(c) the provision of dwellinghouses where:

(i) the number of dwellinghouses to be provided is 10 or more; or

(ii) the development is to be carried out on a site having an area of 0.5 hectares or more and it is not known whether the development falls within sub-paragraph (c)(i)

(d) the provision of a building or buildings where the floor space to be created by the development is 1,000 square metres or more; or

(e) development carried out on a site having an area of 1 hectare or more;

This new role commences on 15 April 2015 and requires Hampshire County Council to be consulted on these developments when a planning application is received by the Local Planning Authority.  

As a statutory consultee we are not responsible for determining planning applications or commenting on issues that do not fall within our remit.

We are not at present offering pre-application advice as a standard service and requests will be determined on a case by case basis.

What are SuDS?

Sustainable Drainage Systems (SuDS) are designed to mimic the natural drainage of surface water, typically managing rainfall close to where it falls. Surface water flows are then slowed down and discharged at a controlled rate before it enters a watercourse. They can also store water, allow it to soak into the ground or enable evaporation from surface water. SuDS offer a wide range of benefits.

They can:

SuDS features include:

Further information on SuDS:


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For further information on Sustainable Drainage Systems in Hampshire:


Sustainable drainage

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