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Mains drainage within Westminster is 'Combined' i.e. rainwater and foul water discharging into the same drain.
It is the responsibility of WDSS to inspect all new drainage up to and including the connection to the main sewer, at which point it becomes the responsibility of Thames Water Utilities Ltd.
If you require further advice or assistance concerning drainage please contact our Building Control Surveyors.
If you require information about existing main sewers contact Thames Water Utilities Ltd.
Tel: 08459 200 800
This scheme is run on behalf of the City Council by the Department of Transportation. If you are a building contractor intending to carry out building work in Westminster, we would ask you to obtain an information pack on the Considerate Builders Scheme,
Tel: 020 7641 2560 or 2564
Fax: 020 7641 7838
The Transportation Department's Highways Licensing Team deals with these applications and they can be contacted on:
Tel: 020 7641 2560 or 2564
Fax: 020 7641 7838