Policy information sourced from the Lewisham Local Plan
SD10 Water supply and wastewater
Strategic Objectives:
E Responding to the climate emergency,
G Healthy and safe communities,
H Securing the timely delivery of infrastructure.
A Development proposals for new water supply and wastewater facilities or the expansion of existing facilities will be supported where the development:
- Makes provision for infrastructure that is required within the Borough as demonstrated by an asset management or similar investment plan;
- Will not result in an unacceptable adverse impact on the environment, human health, public safety, amenity and local character; and
- Will be constructed in a timely and sustainable manner.
B Development proposals should have regard to Drainage and Wastewater Management Plans (DWMPs) and must demonstrate that the local water supply and public sewerage networks have adequate capacity both on and off-site to serve demand arising from the development; or where such capacity does not exist and there are no programmed works, arrangements are made to ensure adequate provision prior to occupation. A Water Supply and/or Drainage Strategy may be required to demonstrate that suitable arrangements are in place to serve the development.
C Development proposals should ensure the separation of surface and foul water systems, including by rectifying misconnections. Proposals should prioritise mains foul drainage and avoid the use of non-mains drainage for foul water disposal, particularly in Source Protection Zones. Where non-mains drainage is proposed for foul water the most sustainable drainage options must be implemented, as supported by a Drainage Strategy.
D Development proposals should be designed to be water efficient, reduce water consumption and minimise pressure on the combined sewer network by integrating SuDS and complying with the London Plan requirements for water efficiency. Planning conditions will be applied to ensure that water efficiency standards are met.
E Development proposals within a Source Protection Zone will only be supported where there is no risk of contamination to groundwater sources, or if a risk is identified, it is suitably demonstrated that adequate mitigation measures will be implemented.
F Development proposals for piled foundations must ensure that disturbances to the ground will not lead to adverse impacts on water quality, including turbidity in the water supply. Development proposals on or in proximity to sites with contaminated land must not introduce new pathways for contamination materials to reach groundwater.
For more information and policy context please see the Lewisham Local Plan