Policy information sourced from the Tower Hamlets Local Plan
D.ES5 Sustainable drainage
Development is required to reduce the risk of surface water flooding, through demonstrating how it reduces the amount of water run-off and discharge from the site through the use of appropriate water reuse and sustainable drainage systems techniques.
Major development is required to submit a drainage strategy which should demonstrate that surface water will be controlled as near to its source as possible in line with the sustainable drainage systems hierarchy.
Development is required to achieve the following run-off rates:
- New development in critical drainage areas is required to achieve a greenfield run-off rate and volume leaving the site
- All other development should seek to achieve greenfield runoff rate and volume leaving the site. Where this is not possible, the minimum expectation is to achieve at least 50% attenuation of the site’s surface water run-off at peak times prior to redevelopment.
For more information please see the Local Plan