The European Water Framework Directive requires that water resources are managed in a more sustainable way and provide an improved level of protection to water quality. This requires a a fundamental change in the overall approach to drainage.

This can be achieved by the use of sustainable urban drainage systems (SUDS) which attempt to imitate the natural movement of storm water from a development, reducing flood risk, enhancing water quality and providing an improved environment.

For maximum porosity a 6-10mm grade of aggregate should be used, or a 3-6mm grade or one of finishes can be incorporated into the decorative porous paving.
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Benefits include:

• Pervious load bearing surface

• Storm water control / pollution filtration treatment

• Heat energy reflection reduction

• Airborne dust capture and retention

• Resin bound aggregate infill

• Lightweight injection moulded plastic manufactured from 100% post-consumer recycled plastic resins, predominately high-density polyethylene (HDPE)

• Applied onto a MOT Type 3

• Recycled aggregates available

• A range of standard colours.

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A Porous pavement is a permeable pavement surface with a stone, water reservoir underneath.

The reservoir temporarily stores surface water runoff before infiltrating (soakes) back into the subsoil.

Alternatively it can be attenuated (temporarily stored) and released to a submerged pipe at the required rate.