SUDS management train

‘Management train’ or ‘treatment train’ are terms used for an integrated sequence of measures employed in a SuDS scheme
which, taken together, control volumes of run off and reduce pollution before discharge. These measures are designed to
emulate the natural catchment process.

SUDS management train

The four principal stages of a SUDS management train

1. Prevention: Good site design and effective housekeeping measures can help minimise run off and pollution levels. These approaches should generally be included within the site management plan to ensure that they are implemented.

SUDS Management train: Prevention

2. Source control: Effective control of run off at or very near its source, this can be achieved with features such as green roofs, soakaways, rain gardens and permeable pavements. When rainwater is harvested on site it can be re-used as a source of non-potable ‘grey’ water thereby reducing the demand for fresh mains water.

SUDS Management train: Source control

3. Site control: Planned management of water in a local area or site – examples would include routing water from building roofs and car parks to soakaway or infiltration areas and then to storm tanks or a detention basin thereby attenuating the flow of water entering the system after a storm event.

SUDS Management train: Site control

4. Regional control: Designing a system that can efficiently manage the run off from a site, or several sites, typically resulting in a balancing pond or wetland. This provides a natural method of handling excess water thereby reducing the risk of flooding events.
SUDS Management train: Regional control