8/6/2019 Suds Leaflet
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A DOs and DONTs GUIDE
for PLANNING and DESIGNING
Sustainable Urban
Drainage Systems (SUDS)
DON
For developers, landowners, planners,
consultants, architects and engineers
SUDS
Further informationPlease contact your local SEPA office for
further informationor visit the following websites:
www.sepa.org.uk/wfd
www.ciria.org.uk/suds
1 Sustainable Urban Drainage Systems Design Manual for Scotland
andNorthern Ireland (CIRIA Report C521) and it s successor The
SUDSManual (CIRIA Report C697 - to be published).
2 Sewers for Scotland 2nd Edit ion a Policy, Designed
ConstructionGuide for Developers in Scotland (WRC - to be
published).
3 The Water Environment (Controlled Activit ies) (Scotland)
Regulations2005 Schedule 3 General Binding Rules (Activities 10
& 11) andassociated guidance.
DONTs
DONT use existing ponds, wetlands or ditches forSUDS
treatment.
DONT use attenuation tanks for water quality treatment.
DONT install end-of-pipe filter drains/infiltration
trenches, swales or soakaways for >5 houses, unlessadditional
SUDS treatment is provided upstream.
DONT design filter drains/infiltration trenches with abypass at
the inlet.
DONT insert inlet pipes at the base of filterdrains/infiltration
trenches - insert at high level.
DONT use filter drains/infiltration trenches where thewater
table is shallow
DONT incorporate gulley pots in permeable paved areas.
DONT allow construction phase run-off to enter SUDSunless it is
intended that the SUDS will be replaced or
restored. Temporary treatment systems separate to the
SUDS should normally be provided.
DONT use infiltration based SUDS for industrial estatedrainage
unless a groundwater risk assessment (prior
investigation) has been undertaken and shown to
beacceptable.
DONT use infiltration based SUDS on contaminated land,unless the
system is impermeably l ined.
DONT drain run-off from high risk areas to the surfacewater
drainage system (e.g. oil, chemical and waste
storage areas, delivery and refuelling areas, industrial
yards, wash areas etc).
