Policy information sourced from the Brent Local Plan

BSUI4 on Site Water Management and Surface Water Attenuation

Substantial weight will be afforded to the target for mains water consumption of 105 litres or less per person per day and to the achievement of greenfield runoff rates for surface water. Where greenfield run-off rates cannot be achieved this should be clearly justified by the applicant.

Major development proposals or minor developments and changes of use which would impact on the current drainage regime must be accompanied by a drainage strategy.

The design and layout of major development proposals will be required to:

  1. use appropriate sustainable drainage measures to control the rate and volume of surface water run-off;
  2. ensure where feasible separation of surface and foul water systems;
  3. make reasonable provision for the safe storage and passage of flood water in excessive events; and
  4. demonstrate adequate arrangements for the management and maintenance of the measures used.

Proposals for minor developments, householder development, and conversions should make use of sustainable drainage measures wherever feasible and must ensure separation of surface and foul water systems.

Proposals that would fail to make adequate provision for the control and reduction of surface water run-off will be refused.

For more information please see the Brent Local Plan