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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Arsene Wenger believes midfielder Jack Wilshere can return from injury stronger than before.
A mother and father have been convicted of child neglect after their one-year-old daughter died with 70 separate injuries, police said.