Policy information sourced from the West Horsley Neighbourhood Plan
WH13: Sustainable Urban Drainage
Development proposals will be supported, provided they are able to demonstrate that they include one or more of the following sustainable drainage design features, adequate to the scale of the development, to manage the risk of surface water run off over land, surface water run off through pipes and foul sewage from pipes within their boundary and elsewhere in the Parish:
- permeable driveways and parking areas;
- water harvesting and storage features;
- green roofs; and
- soakaways.
Any new development will need to ensure that appropriate provision and any necessary mitigation is assessed, delivered and maintained for the lifetime of the development, unless demonstrated to be inappropriate.
Developers will be required to demonstrate that there is adequate waste water capacity both on and off the site to serve the development and that it would not lead to problems for existing or new users. Developers will also be required to demonstrate that additional waste water discharge resulting from the development will not result in significant impacts on aquatic biodiversity. In some circumstances, it may be necessary for developers to fund studies to ascertain whether the proposed development will lead to overloading of the existing waste water infrastructure and detrimental effects on water quality and aquatic biodiversity.
For more information please see the Neighbourhood Plan