A Thames Water spokesman says the water is not sewage.
They say it is the result of a burst water main, which had mixed with silt and mud.
Engineers are on site working to manage the problem.
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The driver was attacked after a pedestrian - who had a child with him - walked out in front of the bus, forcing him to brake hard.
Historically Millwall fans have had the worst reputation. But now it seems Londoners have an almost equally bad impression of Chelsea.
The mayor claimed 'international despots and criminal rings' were using phoney companies to buy homes in the capital.