WSD promotes the management of stormwater runoff as close to source as possible. This provides for the retention and infiltration of stormwater throughout a catchment, and thereby reduces the potential for lower catchment stormwater effects.
There is a large suite of potential at-source responses discussed below, including soil rehabilitation, re-vegetation, capture and re-use of stormwater, living roofs and walls, and pervious paving. Devices such as infiltration and soakage trenches and gross pollution traps can also provide benefits when used close to source.
Note: Technical design guide documents provide detailed advice for design and construction of devices.